ArrowMultiIcon(ImageIcon icon) {
   this.icon = icon;
   if (icon != null) {
     disabledIcon = new ImageIcon(GrayFilter.createDisabledImage(icon.getImage()));
   }
   arrow = new ArrowIcon();
 }
 private static ImageIcon makeGrayImageIcon3(Image img) {
   // GrayFilter1
   return new ImageIcon(GrayFilter.createDisabledImage(img));
 }