public ActionResult Orders(Guid?id = null)
        {
            var model = new QueryService().GetOrders().ToList();

            if (id.HasValue && model.Any())
            {
                var exist = model.FirstOrDefault(m => m.OrderId == id);
                if (exist != null)
                {
                    model.Remove(exist);
                }
            }

            return(View(model));
        }