@Override public String transform(PipelineModule arg0) { return ""; }});
vv.getRenderer().setVertexRenderer(new VertexPainter<Edge>());
vv.getRenderer().getVertexLabelRenderer().setPosition(Position.CNTR);
gm = new ModalMousePlugin(vv.getRenderContext(), new EdgeCreator(){
@Override public Edge create(PipelineModule origin, PipelineModule target) { return createEdge(origin, target); }});
gm.setMode(ModalGraphMouse.Mode.PICKING);
vv.setGraphMouse(gm);
vv.getPickedVertexState().addItemListener(new SelectionListener());
vv.getPickedEdgeState().addItemListener(new EdgeSelectionListener());