def scard(self, key):
        return self.execute_command("SCARD", key)
GCE does operations based on the `name` of resources, and also
dataset/ETHPy150Open jookies/jasmin/jasmin/vendor/txredisapi.py/RedisProtocol.scard--crossover with--dataset/ETHPy150Open ClusterHQ/flocker/flocker/node/agents/gce.py/GCEBlockDeviceAPI.compute_instance_id