static void  CreateAR()
    {
        QuickStartWindow qsw = QuickStartWindow.Instance;

        qsw.titleContent = new GUIContent("QuickStart");
        qsw.Show();
        qsw.Focus();
    }
    public static void Open()
    {
        var win = QuickStartWindow.CreateInstance <QuickStartWindow>();

        win.titleContent = new GUIContent("Quick Start");
        win.position     = new Rect(100f, 100f, 600f, 800f);
        win.minSize      = new Vector2(600f, 800f);
        win.maxSize      = win.minSize;
        win.ShowUtility();
        //win.Show();
    }