public ActionResult Configure()
        {
            var model = new RussianPostShippingModel();
            model.GatewayUrl = _RussianPostSettings.GatewayUrl;
            model.Site = _RussianPostSettings.Site;
            model.Email = _RussianPostSettings.Email;

            return View("~/Plugins/Shipping.RussianPost/Views/ShippingRussianPost/Configure.cshtml", model);
        }
        public ActionResult Configure(RussianPostShippingModel model)
        {
            if (!ModelState.IsValid)
            {
                return Configure();
            }
            
            //save settings
            _RussianPostSettings.GatewayUrl = model.GatewayUrl;
            _RussianPostSettings.Site = model.Site;
            _RussianPostSettings.Email = model.Email;
            _settingService.SaveSetting(_RussianPostSettings);

            SuccessNotification(_localizationService.GetResource("Admin.Plugins.Saved"));

            return Configure();
        }