def _cancelCommands(self, reason):
        while self._current:
            cmd = self._current.popleft()
            cmd.fail(reason)
Cancel all the outstanding commands, making them fail with C{reason}.
dataset/ETHPy150Open kuri65536/python-for-android/python-modules/twisted/twisted/protocols/memcache.py/MemCacheProtocol._cancelCommands