* Test drag & drop events processing order.
* Drag & drop events ALWAYS should go after all other events
* moreover drag should go always before it's pair drop event
*/
public final void testDnDListenersOrder() {
NodeExpandedListener expandingListener = new NodeExpandedListener() {
public void processExpansion(NodeExpandedEvent nodeExpandedEvent)
throws AbortProcessingException {
System.out.println("node expanded");
}