public async Task <IActionResult> Delete(int id, CancellationToken cancellationToken)
        {
            var category = await _context.Categories.FirstOrDefaultAsync(p => p.Id == id, cancellationToken);

            if (category == null)
            {
                return(NotFound());
            }

            _context.Remove(category);

            await _context.SaveChangesAsync(cancellationToken);

            return(Ok());
        }
        public async Task <IActionResult> Delete(int id, CancellationToken cancellationToken = default(CancellationToken))
        {
            var product = await _context.Products.FirstOrDefaultAsync(p => p.Id == id, cancellationToken);

            if (product == null)
            {
                return(NotFound());
            }

            _context.Remove(product);

            await _context.SaveChangesAsync(cancellationToken);

            return(Ok());
        }