/**
  * @see EPSInterface::listContractClients()
  */
 public function listContractClients($sessionId)
 {
     try {
         $listContractClientsStdObject = new stdClass();
         $listContractClientsStdObject->sessionId = $sessionId;
         $response = parent::listContractClients($listContractClientsStdObject);
         $arrResultContractClients = array();
         if (isset($response->return)) {
             $arrStdResultContractClients = $response->return;
             if (is_array($arrStdResultContractClients)) {
                 for ($i = 0; $i < count($arrStdResultContractClients); $i++) {
                     $arrResultContractClients[$i] = new ResultClientData($arrStdResultContractClients[$i]);
                 }
             } else {
                 $arrResultContractClients[0] = new ResultClientData($arrStdResultContractClients);
             }
         }
         return $arrResultContractClients;
     } catch (SoapFault $sf) {
         throw new ServerException($sf);
     }
 }