Akka.Actor.ActorCell.ReceivedTerminated C# (CSharp) Method

        protected void ReceivedTerminated(Terminated t)
        {
            if (!_state.ContainsTerminated(t.ActorRef))
                return;

            _state = _state.RemoveTerminated(t.ActorRef); // here we know that it is the SAME ref which was put in
            ReceiveMessage(t);
        }