def cleanup(self):
        if self.sock:
            INTERNAL_LOG.info('Closing socket')
            self.sock.close()
            self.sock = None
Test that the thing that spits out POP3 'success responses' works
dataset/ETHPy150Open uber/clay/clay/logger.py/TCPHandler.cleanup--crossover with--dataset/ETHPy150Open kuri65536/python-for-android/python-modules/twisted/twisted/mail/test/test_pop3.py/UtilityTestCase.testSuccessResponseFormatter