public IActionResult Comentar(PostViewModel model)
        {
            var idUsuario = User.Identity.GetUserId();

            model.ApplicationUserId = idUsuario;

            var newModel = Mapper.Map <Post>(model);

            try
            {
                _feedService.ComentarPost(newModel);
            }catch (Exception e)
            {
                throw new Exception(e.Message);
            }



            return(AtualizarComentario(newModel.PostId.ToString()));
        }