protected void hideModel(EpoxyModel<?> model) {
    showModel(model, false);
  }
@Test
  public void testHideModel() {
    TestModel testModel = new TestModel();
    testAdapter.addModels(testModel);

    testAdapter.hideModel(testModel);
    verify(observer).onItemRangeChanged(0, 1, null);
    assertFalse(testModel.isShown());

    checkDifferState();
  }