Latest version of org.elasticsearch:elasticsearch-x-content
https://javadoc.io/doc/org.elasticsearch/elasticsearch-x-content
Current version 7.0.0-alpha2
https://javadoc.io/doc/org.elasticsearch/elasticsearch-x-content/7.0.0-alpha2
package-list path (used for javadoc generation -link option)
https://javadoc.io/doc/org.elasticsearch/elasticsearch-x-content/7.0.0-alpha2/package-list