Latest version of org.codehaus.groovy:groovy-groovydoc
https://javadoc.io/doc/org.codehaus.groovy/groovy-groovydoc
Current version 2.2.2
https://javadoc.io/doc/org.codehaus.groovy/groovy-groovydoc/2.2.2
package-list path (used for javadoc generation -link option)
https://javadoc.io/doc/org.codehaus.groovy/groovy-groovydoc/2.2.2/package-list