public MainViewModel()
        {
            Stuff.Add("a");
            Stuff.Add("b");
            Stuff.Add("c");
            Stuff.Add("d");

            GoCommand = new RelayCommand((p) => Stuff.Add(TextValue));
        }
 public TestAttribute()
 {
     Console.WriteLine("Instantiate...");
     Stuff.Add(this);
 }