Latest version of org.jruby:dirgra
https://javadoc.io/doc/org.jruby/dirgra
Current version 0.5
https://javadoc.io/doc/org.jruby/dirgra/0.5
package-list path (used for javadoc generation -link option)
https://javadoc.io/doc/org.jruby/dirgra/0.5/package-list