@Override
  @Nullable
  protected JComponent createCenterPanel() {
    myTree = initTree();
    myTree.addKeyListener(new KeyAdapter() {
      @Override
      public void keyPressed(KeyEvent e) {
        if (KeyEvent.VK_ENTER == e.getKeyCode()) {
          doOKAction();
        }
      }
    });

    new DoubleClickListener() {
      @Override
      protected boolean onDoubleClick(@NotNull MouseEvent e) {
        if (mySelectedTarget != null) {
          doOKAction();
          return true;
        }
        return false;
      }
    }.installOn(myTree);

    return JBUI.Panels.simplePanel(ScrollPaneFactory.createScrollPane(myTree));
  }
@Override
  @Nullable
  protected JComponent createCenterPanel()