public ActionResult <IEnumerable <Recipe> > GetList()
        {
            var result = RecipeService.GetList();

            if (result != null)
            {
                foreach (var recipe in result)
                {
                    recipe.RecipeAuthor.PasswordHash = null;
                    recipe.RecipeAuthor.PasswordSalt = null;
                }
                return(Ok(result));
            }
            else
            {
                return(BadRequest());
            }
        }