public async Task <ActionResult> SetPaymentMethodsJson(string paymentMethodCode)
{
await _cartBuilder.GetOrCreateNewTransientCartAsync(WorkContext.CurrentStore, WorkContext.CurrentCustomer, WorkContext.CurrentLanguage, WorkContext.CurrentCurrency);
var paymentMethods = await _cartApi.CartModuleGetPaymentMethodsAsync(WorkContext.CurrentCart.Id);
var paymentMethod = paymentMethods.FirstOrDefault(pm => pm.GatewayCode == paymentMethodCode);
if (paymentMethod != null)
{
await _cartBuilder.AddPaymentAsync(paymentMethod.ToWebModel());
await _cartBuilder.SaveAsync();
}
return(Json(null, JsonRequestBehavior.AllowGet));
}