Latest version of com.typesafe.akka:akka-testkit_2.13
https://javadoc.io/doc/com.typesafe.akka/akka-testkit_2.13
Current version 2.6.20
https://javadoc.io/doc/com.typesafe.akka/akka-testkit_2.13/2.6.20
package-list path (used for javadoc generation -link option)
https://javadoc.io/doc/com.typesafe.akka/akka-testkit_2.13/2.6.20/package-list