public function LeaseTimeToLive(LeaseTimeToLiveRequest $argument,
                                    $metadata = [], $options = [])
    {
        return $this->_simpleRequest('/etcdserverpb.Lease/LeaseTimeToLive',
            $argument,
            ['\Etcdserverpb\LeaseTimeToLiveResponse', 'decode'],
            $metadata,
            $options
        );
    }