public override void OnInspectorGUI()
        {
            if (GUILayout.Button(TutorialWindowMenuItem.Item))
            {
                UserStartupCode.ShowTutorialWindow();
            }

            if (k_IsAuthoringMode)
            {
                base.OnInspectorGUI();
            }
        }
 static void OpenTutorialWindow()
 {
     UserStartupCode.ShowTutorialWindow();
 }