protected DefaultActionGroup createActionGroup() {
    registerTreeActionShortcut("FileChooser.Delete");
    registerTreeActionShortcut("FileChooser.Refresh");

    var group = new DefaultActionGroup();
    for (var action : ((DefaultActionGroup)ActionManager.getInstance().getAction("FileChooserToolbar")).getChildActionsOrStubs()) {
      group.addAction(action);
    }
    for (var action : ((DefaultActionGroup)ActionManager.getInstance().getAction("FileChooserSettings")).getChildActionsOrStubs()) {
      if (action instanceof ActionStub stub && "FileChooser.ShowHidden".equals(stub.getId())) {
        action.getTemplatePresentation().setIcon(AllIcons.Actions.ToggleVisibility);
        group.addAction(action);
      }
    }
    return group;
  }
protected DefaultActionGroup createActionGroup()