/// <summary>
        /// Entry point into console application.
        /// </summary>
        static void Main()
        {
            // Setup Chain of Responsibility
            var larry = new Director();
            var sam = new VicePresident();
            var tammy = new President();

            larry.SetSuccessor(sam);
            sam.SetSuccessor(tammy);

            // Generate and process purchase requests
            var p = new Purchase(2034, 350.00, "Assets");
            larry.ProcessRequest(p);

            p = new Purchase(2035, 32590.10, "Project X");
            larry.ProcessRequest(p);

            p = new Purchase(2036, 122100.00, "Project Y");
            larry.ProcessRequest(p);

            // Wait for user
            Console.ReadKey();
        }