Question.scala

trait Question[R] {

  def ask(ref: ActorRef)(implicit timeout: Timeout, ct: ClassTag[R]):
  Future[R] =
    new AskableActorRef(ref).ask(this).mapTo[R]

  def reply(r: R)(implicit context: ActorContext): Unit =
    context.sender ! r

  def replyWithFuture(f: Future[R])
    (implicit ac: ActorContext, ec: ExecutionContext): Unit = {
    val _ = f.pipeTo(ac.sender)
    ()
  }

}