def test_bool(self):
        prio_set_list = event._PrioritizedSetList()

        assert bool(prio_set_list) is False

        prio_set_list.add(0, None)
        assert bool(prio_set_list) is True
async def get_user_language(self, obj):
        """
        You need to override this method and return user language
        """
        raise NotImplementedError