def test_contains(self):
        prio_set_list = event._PrioritizedSetList()
        obj = object()

        prio_set_list.add(0, obj)
        assert obj in prio_set_list
def get_bind(self, mapper=None, **kwargs):
                    return super(MySession, self).get_bind(
                        mapper=mapper, **kwargs
                    )