@Override
    public String extractText() {
      List<Object> selection = comp.getSelectedValuesList();
      JBIterable<Object> values;
      if (selection.size() > 1) {
        values = JBIterable.from(selection);
      }
      else {
        ListModel<Object> model = comp.getModel();
        values = JBIterable.generate(0, o -> o + 1).take(model.getSize()).map(o -> model.getElementAt(o));
      }
      ListCellRenderer<Object> renderer = comp.getCellRenderer();
      StringBuilder sb = new StringBuilder();
      for (Object value : values) {
        append(sb, value, renderer.getListCellRendererComponent(comp, value, -1, false, false));
        sb.append("\n");
      }
      return sb.toString();
    }
@Override
    public String extractText()