Latest version of com.typesafe.akka:akka-testkit_2.11.0-M3
https://javadoc.io/doc/com.typesafe.akka/akka-testkit_2.11.0-M3
Current version 2.1.4
https://javadoc.io/doc/com.typesafe.akka/akka-testkit_2.11.0-M3/2.1.4
package-list path (used for javadoc generation -link option)
https://javadoc.io/doc/com.typesafe.akka/akka-testkit_2.11.0-M3/2.1.4/package-list