protected function isAllowedApplyVatInvoicing(Gpf_Db_Table_UserAttributes $userAttributes) {
     try {
         if ($userAttributes->getAttribute("apply_vat_invoicing") == Gpf::YES) {
             return true;
         }
     } catch (Gpf_Data_RecordSetNoRowException $e) {
         return false;
     }
     return false;
 }