@Override
    public GutterIconRenderer createGutterRenderer() {
      if (myIcon == null) return null;
      return new LineMarkerGutterIconRenderer<>(this) {
        @Override
        public AnAction getClickAction() {
          return null; // to place breakpoint on mouse click
        }
      };
    }
@Override
    public GutterIconRenderer createGutterRenderer()