Latest version of org.codehaus.groovy:groovy
https://javadoc.io/doc/org.codehaus.groovy/groovy
Current version 2.6.0-alpha-4
https://javadoc.io/doc/org.codehaus.groovy/groovy/2.6.0-alpha-4
package-list path (used for javadoc generation -link option)
https://javadoc.io/doc/org.codehaus.groovy/groovy/2.6.0-alpha-4/package-list