def on_kill(self):
        pass
Fire whatever Deferreds we've built up in our mailbox.
dataset/ETHPy150Open airbnb/airflow/airflow/models.py/BaseOperator.on_kill--crossover with--dataset/ETHPy150Open kuri65536/python-for-android/python-modules/twisted/twisted/mail/test/test_pop3.py/ValueErrorAsyncDeferredCommandTestCase._flush