@NotNull
  private AbstractAction createNavigationAction(boolean goDown, boolean withSelection) {
    return new AbstractAction() {
      @Override
      public void actionPerformed(ActionEvent e) {
        int row = goDown ? getNextRow() : getPrevRow();
        if (row != -1) {
          selectRow(row, withSelection);
        }
      }
    };
  }
@NotNull
  private AbstractAction createNavigationAction(boolean goDown, boolean withSelection)