public ActionResult <Beer> GetBeer(int id)
        {
            Beer existingBeer = beerDAO.GetBeer(id);

            if (existingBeer != null)
            {
                return(Ok(existingBeer));
            }
            else
            {
                return(NotFound());
            }
        }
 public Beer GetABeer(int id)
 {
     return(beerDAO.GetBeer(id));
 }