Example passing in EventStream

example2.cs

[Fact]
public void WhenActorStopped_MessagesGoToDeadLetter()
{
    bool deadLetterEventReceived = false;
    var eventStream = new EventStream();
    eventStream.Subscribe<DeadLetterEvent>(@event => deadLetterEventReceived = true);

    var props = Actor.FromProducer(() => new DoNothingActor())
                     .WithMailbox(() => new TestMailbox())
                     .WithEventStream(eventStream);

    var pid = Actor.Spawn(props);
    pid.Stop();
    pid.Tell("did you die?");

    Assert.True(deadLetterEventReceived);
}