public async Task <Order> PlaceCurrentUserCartAsync()
{
var newOrder = PrepareNewOrder();
AddCartItemsToOrder(newOrder);
CalculatePrices(newOrder);
await _orderDataService.AddAsync(newOrder);
await _currentUserService.SaveCustomAttributeAsync(UserAttributes.PaymentProccessingOrderId,
newOrder.Id.ToString());
await _currentUserService.ClearCartAsync();
await _currentUserService.ClearCouponCodeUsagesAsync();
return(newOrder);
}