public void sendOnce(Object message, long delay, ActorRef sender) {
        dispatcher.sendMessageOnce(endpoint, message, ActorTime.currentTime() + delay, sender);
    }
public void sendOnce ( Object message , long delay , ActorRef sender ) { dispatcher . sendMessageOnce ( endpoint , message , ActorTime . currentTime ( ) + delay , sender ) ; }
Send message once

@param message message
@param delay   delay
@param sender  sender