Latest version of com.google.protobuf:protobuf-java-util
https://javadoc.io/doc/com.google.protobuf/protobuf-java-util
Current version 3.1.0
https://javadoc.io/doc/com.google.protobuf/protobuf-java-util/3.1.0
package-list path (used for javadoc generation -link option)
https://javadoc.io/doc/com.google.protobuf/protobuf-java-util/3.1.0/package-list