protected function saveECDefaultShippingId($config, $shippingId, $payPalConfig)
    {
        $payPalModuleId = 'module:' . $payPalConfig->getModuleId();
        $config->saveShopConfVar('string', 'sOEPayPalMECDefaultShippingId', $shippingId, null, $payPalModuleId);
    }