def is_unchanged(self):
        return self._no_write_attempts
Sort models topologically so that parents will precede children.
dataset/ETHPy150Open bloomberg/phabricator-tools/py/abd/abdt_conduitmock.py/ConduitMockData.is_unchanged--crossover with--dataset/ETHPy150Open coleifer/peewee/peewee.py/sort_models_topologically