/**
  * List with special parameters for the message
  *
  * @param string $app
  * @param string $text
  * @return array
  */
 public function getSpecialParameterList($app, $text)
 {
     $specialParameters = $this->activityManager->getSpecialParameterList($app, $text);
     if ($specialParameters !== false) {
         return $specialParameters;
     }
     return array();
 }
 /**
  * List with special parameters for the message
  *
  * @param string $app
  * @param string $text
  * @return array
  */
 public function getSpecialParameterList($app, $text)
 {
     if ($app === 'files' && $text === 'shared_group_self') {
         return array(0 => 'file');
     } else {
         if ($app === 'files') {
             return array(0 => 'file', 1 => 'username');
         }
     }
     $specialParameters = $this->activityManager->getSpecialParameterList($app, $text);
     if ($specialParameters !== false) {
         return $specialParameters;
     }
     return array();
 }