public function deprecate($project, $image, Compute_DeprecationStatus $postBody, $optParams = array())
  {
    $params = array('project' => $project, 'image' => $image, 'postBody' => $postBody);
    $params = array_merge($params, $optParams);
    return $this->call('deprecate', array($params), "Compute_Operation");
  }