static void Main(string[] args)
        {
            var fsm = new FiniteStateMachine();

            Console.WriteLine(fsm.State);
            fsm.ProcessEvent(FiniteStateMachine.Events.PlugIn);
            Console.WriteLine(fsm.State);
            fsm.ProcessEvent(FiniteStateMachine.Events.TurnOn);
            Console.WriteLine(fsm.State);
            fsm.ProcessEvent(FiniteStateMachine.Events.TurnOff);
            Console.WriteLine(fsm.State);
            fsm.ProcessEvent(FiniteStateMachine.Events.TurnOn);
            Console.WriteLine(fsm.State);
            fsm.ProcessEvent(FiniteStateMachine.Events.RemovePower);
            Console.WriteLine(fsm.State);
            Console.ReadKey();
        }
        static void Main(string[] args)
        {
            var fsm = new FiniteStateMachine();

            while (true)
            {
                Console.WriteLine("Current State: " + fsm.State);
                Console.Write("Enter Event : ");
                string line = Console.ReadLine();
                if (line == "Exit") // Check string
                {
                    break;
                }

                fsm.ProcessEvent((FiniteStateMachine.Events)Enum.Parse(typeof(FiniteStateMachine.Events), line));
                Console.WriteLine("-------------------------");
            }
        }