protected void handleGraph(Attributes attrs) {
protected void handleGraph() {
    protected void handleGraph(Attributes attrs) {        //Find the owner node.        _layer = _figNode.getNestedLayer();        ModuleNode netNode = (ModuleNode) _figNode.getOwner();        _graphModel = netNode.getNestedModel();        _layerStack.push(_layer);        _graphModelStack.push(_graphModel);    }