Latest version of com.typesafe.akka:akka-protobuf-v3_2.12
https://javadoc.io/doc/com.typesafe.akka/akka-protobuf-v3_2.12
Current version 2.6.14
https://javadoc.io/doc/com.typesafe.akka/akka-protobuf-v3_2.12/2.6.14
package-list path (used for javadoc generation -link option)
https://javadoc.io/doc/com.typesafe.akka/akka-protobuf-v3_2.12/2.6.14/package-list