public Resumer()
{
Receive<string>(s => s.StartsWith("spawn:"), s => Sender.Tell(Context.ActorOf<Resumer>(s.Substring(6))));
Receive("spawn", _ => Sender.Tell(Context.ActorOf<Resumer>()));
Receive("fail", _ => { throw new Exception("expected"); });
Receive("ping", _ => Sender.Tell("pong"));
}