@APIParamsCall
    def update_policy_rule(self, policy_rule, body=None):
        return self.put(self.policy_rule_path % (policy_rule), body=body)
See ``BlockDeviceAPI.get_device_path``.
dataset/ETHPy150Open openstack/python-group-based-policy-client/gbpclient/v2_0/client.py/Client.update_policy_rule--crossover with--dataset/ETHPy150Open ClusterHQ/flocker/flocker/node/agents/blockdevice.py/IBlockDeviceAsyncAPI.get_device_path