public async Task <ActionResult <Grupo> > GetByIdAsync(int id)
        {
            try
            {
                var grupo = await _service.GetByIdAsync(id);

                if (grupo != null)
                {
                    return(new OkObjectResult(grupo));
                }

                return(new NotFoundResult());
            }
            catch (Exception ex)
            {
                return(new BadRequestObjectResult(ex));
            }
        }