PKPNotificationOperationManager::getNotificationContents PHP Method

    function getNotificationContents($request, $notification)
    {
        return $this->getNotificationMessage($request, $notification);
    }

 /**
  * Using the notification message, construct, if needed, any additional
  * content for the notification body. If a specific notification type
  * is not defined, it will return the parent method return value.
  * Define a notification type case on this method only if you need to
  * present more than just text in notification. If you need to define
  * just a locale key, use the getNotificationMessage method only.
  * @copydoc PKPNotificationOperationManager::getNotificationContents()
  */
 public function getNotificationContents($request, $notification)
 {
     $content = parent::getNotificationContents($request, $notification);
     $type = $notification->getType();
     assert(isset($type));
     switch ($type) {
         case NOTIFICATION_TYPE_FORM_ERROR:
             $templateMgr = TemplateManager::getManager($request);
             $templateMgr->assign('errors', $content);
             return $templateMgr->fetch('controllers/notification/formErrorNotificationContent.tpl');
         case NOTIFICATION_TYPE_ERROR:
             if (is_array($content)) {
                 $templateMgr->assign('errors', $content);
                 return $templateMgr->fetch('controllers/notification/errorNotificationContent.tpl');
             } else {
                 return $content;
             }
         default:
             $delegateResult = $this->getByDelegate($notification->getType(), $notification->getAssocType(), $notification->getAssocId(), __FUNCTION__, array($request, $notification));
             if ($delegateResult) {
                 $content = $delegateResult;
             }
             return $content;
     }
 }