public async Task ReturnedBooking(int id)
        {
            Booking booking = await GetBookingByKeyAsync(id);

            if (booking.Returned == false)
            {
                booking.Returned = true;
                foreach (var bookingItem in booking.BookingItems)
                {
                    //Item item = await _itemService.GetItemByIdAsync(bookingItem.ItemId);
                    Item item = await _itemService.GetObjectByKeyAsync(bookingItem.ItemId);

                    item.Stock = item.Stock + bookingItem.Quantity;
                    //await _itemService.UpdateItemAsync(item.Id, item);
                    await _itemService.UpdateObjectAsync(item);
                }
                await dbService.UpdateObjectAsync(booking);
            }
            else
            {
                booking.Returned = false;
                foreach (var bookingItem in booking.BookingItems)
                {
                    //Item item = await _itemService.GetItemByIdAsync(bookingItem.ItemId);
                    Item item = await _itemService.GetObjectByKeyAsync(bookingItem.ItemId);

                    item.Stock = item.Stock - bookingItem.Quantity;
                    //await _itemService.UpdateItemAsync(item.Id, item);
                    await _itemService.UpdateObjectAsync(item);
                }
                await dbService.UpdateObjectAsync(booking);
            }
        }
 public async Task UpdateItemAsync(int id, Item item)
 {
     item.Id = id;
     await _itemDbService.UpdateObjectAsync(item);
 }