EventPublisher specifies
Publisher is a chained operation that supports publishing via multiple links.
Publisher is a chained operation that supports publishing via multiple links. If a publishing link returns Left(event), the next publishing link will be processed; otherwise if Right(event) is returned then publishing will cease.
Inert publisher takes no publishing action and continues to next.
Publish event to actor's sender
Equivalent to identity publisher; takes no publishing action and continues to next.
Publish event to ActorSystem's eventStream