public async Task <IActionResult> EditBars(int id, EditBarsViewModel vm)
        {
            try
            {
                await cocktailServices.AddBarsAsync(id, vm.BarsToAdd);

                await cocktailServices.RemoveBarsAsync(id, vm.BarsToRemove);

                return(RedirectToAction("Details", new { id = id }));
            }
            catch (InvalidCastException)
            {
                return(BadRequest());
            }
        }