Latest version of com.typesafe.akka:akka-stream-kafka-testkit_2.12
https://javadoc.io/doc/com.typesafe.akka/akka-stream-kafka-testkit_2.12
Current version 3.1.0-M2
https://javadoc.io/doc/com.typesafe.akka/akka-stream-kafka-testkit_2.12/3.1.0-M2
package-list path (used for javadoc generation -link option)
https://javadoc.io/doc/com.typesafe.akka/akka-stream-kafka-testkit_2.12/3.1.0-M2/package-list