public static void Exec()
        {
            Counter c1 = new Counter();
            Counter c2 = c1;
            c1++;

            Console.WriteLine("c1: " + c1.Count);

        }
        public void TestMethod2()
        {
            Counter c1 = new Counter();
            Counter c2 = c1;
            c1++;

            Console.WriteLine("c1: " + c1.Count);
            c1++;
            Console.WriteLine("c1: " + c1.Count);
            c1 = c1.GetNextValue();
            Console.WriteLine("c1: " + c1.Count);

            c2++;
            Console.WriteLine("c2: " + c2.Count);
            c1++;
            Console.WriteLine("c1: " + c1.Count);

        }