public async Task <List <ComboProduct> > AddComboProductRangeAsync(List <ComboProduct> comboProducts)
        {
            if (!comboProducts.Any())
            {
                throw new ArgumentNullException($"{nameof(AddComboProductRangeAsync)} entity must not be null");
            }

            try
            {
                await _context.AddRangeAsync(comboProducts);

                await _context.SaveChangesAsync();

                return(comboProducts);
            }
            catch (Exception)
            {
                throw new Exception($"{nameof(comboProducts)} could not be saved");
            }
        }