Elasticsearch version (bin/elasticsearch --version): 7.5.0
Documentation on the website shows the following at https://www.elastic.co/guide/en/elasticsearch/client/java-rest/7.5/java-rest-high-query-builders.html:

It seems that mapper-extras-client is not defined in the docs, where as rank-eval-client-javadoc is defined in docs/Versions.asciidoc but not used. Not sure which one should be used, so I won't create any PR.