filteredModel.addElement(new Pair(d.get(), _table.get(d.get())));
	public DefaultListModel getFilteredListModel(Graph subset) {		if(subset == _g) {			return getListModel();		}				Set uniqueVals = new HashSet();		DefaultListModel filteredModel = new DefaultListModel();		Iterator i = subset.getVertices().iterator();				while(i.hasNext()) {			Datum d = ((Vertex) i.next()).getDatum(_datumName);			if(d != null && !uniqueVals.contains(d.get())) {				filteredModel.addElement(new Pair(d.get(), _table.get(d.get())));				uniqueVals.add(d.get());			}		}		return filteredModel;	}