/**
  * Call PAYMENT_CONFIRM request
  * 
  * @global order $order
  * @param string $transactionId
  * @param string $transactionShortId
  * @param int $orderId
  * @return array
  */
 protected function _paymentConfirm($transactionId, $transactionShortId, $orderId)
 {
     global $order;
     $data = array('HeadInfo' => rpRequestMapper::getHeadInfoModel($order, $transactionId, $transactionShortId, $orderId));
     $requestService = new rpRequestService($this->sandbox, $data);
     $result = $requestService->callPaymentConfirm();
     rpDb::xmlLog($order, $requestService->getRequest(), $orderId, $requestService->getResponse());
     return $result;
 }