private void observe(Node n) {
        n.layoutXProperty().addListener(this);
        n.layoutYProperty().addListener(this);
    }
Animates all the children of a Region.
<code>
  VBox myVbox = new VBox();
  LayoutAnimator animator = new LayoutAnimator();
  animator.observe(myVbox.getChildren());
</code>

@param nodes  the nodes to observe
tool-parent/tool-core/src/main/java/com/speedment/tool/core/util/LayoutAnimator.java