public ActionResult <Wishlist> PostWishlist(WishlistDTO wishlist)
        {
            Wishlist wishlistToCreate = new Wishlist()
            {
                OwnerName = wishlist.OwnerName, Created = DateTime.Now
            };

            foreach (var i in wishlist.Presents)
            {
                wishlistToCreate.AddPresent(new Present(i.Name, i.Price, i.Category));
            }
            _wishlistRepository.Add(wishlistToCreate);
            _wishlistRepository.SaveChanges();
            return(CreatedAtAction(nameof(GetWishlist), new { id = wishlistToCreate.Id }, wishlistToCreate));
        }