def _flush(self):
        while self.pop3Server.mbox.waiting:
            d, a = self.pop3Server.mbox.waiting.pop()
            d.callback(a)
        IndexErrorCommandTestCase._flush(self)
Lists all of the certificates that have been added to the specified
dataset/ETHPy150Open kuri65536/python-for-android/python-modules/twisted/twisted/mail/test/test_pop3.py/IndexErrorAsyncDeferredCommandTestCase._flush--crossover with--dataset/ETHPy150Open Azure/azure-sdk-for-python/azure-batch/azure/batch/operations/certificate_operations.py/CertificateOperations.list