def test_is_creatable_not_inherited(self):
        self.assertTrue(MTIChildPage.is_creatable)
        self.assertIn(MTIChildPage, get_page_models())
is_creatable should not be inherited in the normal manner, and should
dataset/ETHPy150Open torchbox/wagtail/wagtail/wagtailcore/tests/test_page_model.py/TestIsCreatable.test_is_creatable_not_inherited