public IActionResult Post([FromBody] Vendedor vendedor)
        {
            string accept = Request.Headers["Content-Type"].ToString();

            if (accept != "application/json" && accept != "*/*")
            {
                return(StatusCode(415)); //Unsupported Media Type
            }
            else
            {
                int ok = ManejadoraVendedores.insertarVendedor(vendedor);

                if (ok == 1)
                {
                    return(StatusCode(204)); //Creado
                }
                else if (ok == -1)
                {
                    return(StatusCode(409)); //Conflict
                }
                else
                {
                    return(StatusCode(400)); //No se ha podido crear
                }
            }
        }
        public IActionResult Get([FromQuery(Name = "username")] string username)
        {
            if (username == null)
            {
                return(StatusCode(418));
            }

            string accept = Request.Headers["Accept"].ToString();

            if (accept != "application/json" && accept != "*/*")
            {
                return(StatusCode(406)); //Unsupported Media Type
            }
            else
            {
                Vendedor vendedor = ManejadoraVendedores.vendedorPorNombre(username);

                if (vendedor == null)
                {
                    return(NotFound(username));
                }
                else
                {
                    return(Ok(vendedor));
                }
            }
        }