public virtual async Task <IActionResult> ExportXml()
        {
            if (!await _permissionService.AuthorizeAsync(StandardPermissionProvider.ManageManufacturers))
            {
                return(AccessDeniedView());
            }

            try
            {
                var manufacturers = await _manufacturerService.GetAllManufacturersAsync(showHidden : true);

                var xml = await _exportManager.ExportManufacturersToXmlAsync(manufacturers);

                return(File(Encoding.UTF8.GetBytes(xml), "application/xml", "manufacturers.xml"));
            }
            catch (Exception exc)
            {
                await _notificationService.ErrorNotificationAsync(exc);

                return(RedirectToAction("List"));
            }
        }