@Override
        public void customize(@NotNull JList<? extends FileType> list, FileType value, int index, boolean selected, boolean hasFocus) {
          if (value == null) {
            setIcon(AllIcons.Actions.Cancel);
            setText(XPathBundle.message("label.disabled"));
          }
          else {
            super.customize(list, value, index, selected, hasFocus);
          }
        }
@Override
        public void customize(@NotNull JList<? extends FileType> list, FileType value, int index, boolean selected, boolean hasFocus)