public function setDefault($name, Google_Service_CloudMachineLearning_GoogleCloudMlV1beta1SetDefaultVersionRequest $postBody, $optParams = array())
  {
    $params = array('name' => $name, 'postBody' => $postBody);
    $params = array_merge($params, $optParams);
    return $this->call('setDefault', array($params), "Google_Service_CloudMachineLearning_GoogleCloudMlV1beta1Version");
  }