protected void createFeedback() {
    if (myFirstInsertFeedback == null) {
      FeedbackLayer layer = myContext.getArea().getFeedbackLayer();
      myBounds = myContainer.getBounds(layer);

      createFirstInsertFeedback();
      createInsertFeedback();

      if (getChildren().isEmpty()) {
        layer.add(myFirstInsertFeedback);
      }
      else {
        layer.add(myInsertFeedback);
      }
      layer.repaint();
    }
  }
protected void createFeedback()