Sends a one-way asynchronous message.
Comparison only takes address into account.
Forwards the message and passes the original sender actor as the sender.
Obtain ActorRef by possibly traversing the actor tree or looking it up at some provider-specific location.
Obtain parent of this ref; used by getChild for ".
Is the actor shut down? The contract is that if this method returns true, then it will never be false again.
Returns the path for this actor (from this actor up to the root actor).
Get a reference to the actor ref provider which created this ref.
Sends the specified message to the sender, i.