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