public async Task <IActionResult> Create(ModeloViewModel modeloViewModel)
        {
            if (ModelState.IsValid == false)
            {
                return(View(modeloViewModel));
            }

            var modelo = _mapper.Map <Modelo>(modeloViewModel);
            await _modeloService.Insert(modelo);

            if (OperacaoValida() == false)
            {
                return(View(modeloViewModel));
            }

            return(RedirectToAction("Index"));
        }