Latest version of org.eclipse.xtend:org.eclipse.xtend.lib
https://javadoc.io/doc/org.eclipse.xtend/org.eclipse.xtend.lib
Current version 2.9.0.beta1
https://javadoc.io/doc/org.eclipse.xtend/org.eclipse.xtend.lib/2.9.0.beta1
package-list path (used for javadoc generation -link option)
https://javadoc.io/doc/org.eclipse.xtend/org.eclipse.xtend.lib/2.9.0.beta1/package-list