Latest version of org.codehaus.groovy:groovy-datetime
https://javadoc.io/doc/org.codehaus.groovy/groovy-datetime
Current version 2.5.21
https://javadoc.io/doc/org.codehaus.groovy/groovy-datetime/2.5.21
package-list path (used for javadoc generation -link option)
https://javadoc.io/doc/org.codehaus.groovy/groovy-datetime/2.5.21/package-list