public class Follower extends AbstractActor {
final Integer identifyId = 1;
public Follower(){
ActorSelection selection = context().actorSelection("/user/another");
selection.tell(new Identify(identifyId), self());
receive(ReceiveBuilder.
match(ActorIdentity.class, id -> id.getRef() != null, id -> {
ActorRef ref = id.getRef();
context().watch(ref);