code: @Test public void shouldSetCallback() throws Exception {
    final LifecycleCallback callback=Mockito.spy(new LifecycleCallbackSupport());
    victim=new BaseWroManagerFactory().setModelFactory(WroUtil.factoryFor(new WroModel()));
    final WroManager manager=victim.create();
    InjectorBuilder.create(victim).build().inject(manager);
    manager.registerCallback(new ObjectFactory<LifecycleCallback>(){
      public LifecycleCallback create(){
        return callback;
      }
    }
  );
    manager.getModelFactory().create();
    Mockito.verify(callback).onBeforeModelCreated();
    Mockito.verify(callback).onAfterModelCreated();
  }
  