public ActionResult Increment()
        {
            var mySession = new MySessionWrapper(Session);

            mySession.Counter++;
            return(View("Index"));
        }
        public async Task <ActionResult> IncrementAsync()
        {
            await Task.Run(() =>
            {
                var mySession = new MySessionWrapper(Session);
                mySession.Counter++;
            });

            return(View("Index"));
        }