def remove_metadata_key(self, key, prefix=None):
        return self.manager.remove_metadata_key(self, key, prefix=prefix)
Send a PING frame.
dataset/ETHPy150Open rackspace/pyrax/pyrax/object_storage.py/Container.remove_metadata_key--crossover with--dataset/ETHPy150Open python-hyper/hyper-h2/h2/connection.py/H2Connection.ping