public function execute($instanceName, Google_Service_RemoteBuildExecution_BuildBazelRemoteExecutionV2ExecuteRequest $postBody, $optParams = array())
  {
    $params = array('instanceName' => $instanceName, 'postBody' => $postBody);
    $params = array_merge($params, $optParams);
    return $this->call('execute', array($params), "Google_Service_RemoteBuildExecution_GoogleLongrunningOperation");
  }