public void Typed_actor_ref_serialization()
            {
                var actor = system.TypedActorOf <ITestAnotherActor>("bar");

                var cmd = new TestAnotherActorCommand
                {
                    Ref = system.TypedActorOf <ITestActor>("foo")
                };

                Assert.DoesNotThrowAsync(async() => await(actor < cmd));
            }
 Task On(TestAnotherActorCommand x) => x.Ref < new TestActorCommand();
 Task On(TestAnotherActorCommand x) => x.Ref.Tell(new TestActorCommand());