def test_gets(self):
        """
        L{MemCacheProtocol.get} handles an additional cas result when
        C{withIdentifier} is C{True} and forward it in the resulting
        L{Deferred}.
        """
        return self._test(
            self.proto.get(b"foo", True), b"gets foo\r\n",
            b"VALUE foo 0 3 1234\r\nbar\r\nEND\r\n", (0, b"1234", b"bar"))

        L{MemCacheProtocol.get} handles an additional cas result when
        C{withIdentifier} is C{True} and forward it in the resulting
        L{Deferred}.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/test/test_memcache.py