/**
  * @param PagSeguroCredentials $credentials
  * @param $notificationCode
  * @return null|PagSeguroParserData
  * @throws Exception
  * @throws PagSeguroServiceException
  */
 public static function findByNotification(PagSeguroCredentials $credentials, $notificationCode)
 {
     LogPagSeguro::info("PagSeguroPreApprovalService.FindByNotification({$notificationCode}) - begin");
     self::$connectionData = new PagSeguroConnectionData($credentials, self::SERVICE_NAME);
     try {
         $connection = new PagSeguroHttpConnection();
         $connection->get(self::buildFindByNotificationUrl(self::$connectionData, $notificationCode), self::$connectionData->getServiceTimeout(), self::$connectionData->getCharset());
         self::$service = "FindByNotification";
         return self::getResult($connection, $notificationCode);
     } catch (PagSeguroServiceException $err) {
         //Logging
         LogPagSeguro::error("PagSeguroServiceException: " . $err->getMessage());
         //Exception
         throw $err;
     } catch (Exception $err) {
         //Logging
         LogPagSeguro::error("Exception: " . $err->getMessage());
         //Exception
         throw $err;
     }
 }