public async Task <ActionResult> ListaDeClientes()
        {
            try
            {
                var clientes = await _service.ListaDeClientes();

                var results = _mapper.Map <UserDto[]>(clientes);
                return(Ok(results));
            }
            catch (BusinessException e)
            {
                if (e.Message.Equals("client not found"))
                {
                    return(Ok("client not found"));
                }

                return(BadRequest());
            }
            catch (System.Exception e)
            {
                return(this.StatusCode(StatusCodes.Status500InternalServerError, "Banco de dados Falhou"));
            }
        }