@org.junit.Test
public void mustBunch() {
final ActorRef buncher = system.actorOf(Props.create(MyFSM.class));
final TestProbe probe = new TestProbe(system);
buncher.tell(new SetTarget(probe.ref()), ActorRef.noSender());
buncher.tell(new Queue(1), ActorRef.noSender());
buncher.tell(new Queue(2), ActorRef.noSender());
buncher.tell(flush, ActorRef.noSender());
buncher.tell(new Queue(3), ActorRef.noSender());
final Batch b = probe.expectMsgClass(Batch.class);