public static bool DoMaskToggle(bool display, Rect rect)
        {
            Event evt       = Event.current;
            Rect  arrowRect = new Rect(rect.x - 1f, rect.y + 5f, 0f, 0f);

            if (evt.rawType == EventType.Repaint)
            {
                EditorStyles.foldout.Draw(arrowRect, false, false, display, false);
            }
            if (evt.rawType == EventType.MouseDown && rect.Contains(evt.mousePosition))
            {
                display = !display;
                evt.Use();
            }
            MGUI.SpaceN20();
            return(display);
        }