DataHandler annotateDataObjects(TreeImageDisplay[] nodes)
DataHandler annotateDataObjects(JFrame owner, TreeImageDisplay[] nodes)
   DataHandler annotateDataObjects(TreeImageDisplay[] nodes)   {		Object uo;		Set toAnnotate = new HashSet();		for (int i = 0; i < nodes.length; i++) {			uo = nodes[i].getUserObject();			if (uo instanceof DataObject) toAnnotate.add(uo);		}		dataHandler = AnnotatorFactory.getAnnotator(toAnnotate, 									TreeViewerAgent.getRegistry());		return dataHandler;   }