/**
  * @see EPSInterface::trackParcel()
  */
 public function trackParcel($sessionId, $parcelId, $language)
 {
     try {
         $trackParcelStdObject = new stdClass();
         $trackParcelStdObject->sessionId = $sessionId;
         $trackParcelStdObject->parcelId = $parcelId;
         $trackParcelStdObject->language = $language;
         $response = parent::trackParcel($trackParcelStdObject);
         $arrResultTrackParcel = array();
         if (isset($response->return)) {
             $arrStdResultTrackParcel = $response->return;
             if (is_array($arrStdResultTrackParcel)) {
                 for ($i = 0; $i < count($arrStdResultTrackParcel); $i++) {
                     $arrResultTrackParcel[$i] = new ResultTrackPickingEx($arrStdResultTrackParcel[$i]);
                 }
             } else {
                 $arrResultTrackParcel[0] = new ResultTrackPickingEx($arrStdResultTrackParcel);
             }
         }
         return $arrResultTrackParcel;
     } catch (SoapFault $sf) {
         throw new ServerException($sf);
     }
 }