@Override
  public void handleDoubleClickOrEnter(SimpleTree tree, InputEvent inputEvent) {
    if (mySourceItem.isProvideElements() && getChildren().length == 0) {
      getArtifactEditor().getLayoutTreeComponent().putIntoDefaultLocations(Collections.singletonList(mySourceItem));
    }
  }
@Override
  public void handleDoubleClickOrEnter(SimpleTree tree, InputEvent inputEvent)