replacing StringBuilder with StringJoiner in order to simplify logic#4628

renatoh wants to merge 6 commits into

apache:mainapache/solr:mainfrom

renatoh:simplify-code-by-switchign-from-StringBuilder-to-StringJoinerrenatoh/solr:simplify-code-by-switchign-from-StringBuilder-to-StringJoinerCopy head branch name to clipboard