Latest version of org.codelibs.elasticsearch.module:lang-painless
https://javadoc.io/doc/org.codelibs.elasticsearch.module/lang-painless
Current version 6.0.0-rc2
https://javadoc.io/doc/org.codelibs.elasticsearch.module/lang-painless/6.0.0-rc2
package-list path (used for javadoc generation -link option)
https://javadoc.io/doc/org.codelibs.elasticsearch.module/lang-painless/6.0.0-rc2/package-list