//Get a graph model - it exists because we have a workspace
 GraphModel graphModel = Lookup.getDefault().lookup(GraphController.class).getGraphModel(workspace);

 //Create three nodes
 Node n0 = graphModel.factory().newNode("n0");
 n0.setLabel("Node 0");
 Node n1 = graphModel.factory().newNode("n1");
 n1.setLabel("Node 1");
 Node n2 = graphModel.factory().newNode("n2");
 n2.setLabel("Node 2");

 //Create three edges
 Edge e1 = graphModel.factory().newEdge(n1, n2, 0, 1.0, true);
 Edge e2 = graphModel.factory().newEdge(n0, n2, 0, 2.0, true);
 Edge e3 = graphModel.factory().newEdge(n2, n0, 0, 2.0, true);   //This is e2's mutual edge

 //Append as a Directed Graph
 DirectedGraph directedGraph = graphModel.getDirectedGraph();
 directedGraph.addNode(n0);
 directedGraph.addNode(n1);
 directedGraph.addNode(n2);
 directedGraph.addEdge(e1);
 directedGraph.addEdge(e2);
 directedGraph.addEdge(e3);

 //Count nodes and edges
 System.out.println("Nodes: " + directedGraph.getNodeCount() + " Edges: " + directedGraph.getEdgeCount());

 //Get a UndirectedGraph now and count edges
 UndirectedGraph undirectedGraph = graphModel.getUndirectedGraph();
 System.out.println("Edges: " + undirectedGraph.getEdgeCount());   //The mutual edge is automatically merged

 //Iterate over nodes
 for (Node n : directedGraph.getNodes()) {
     Node[] neighbors = directedGraph.getNeighbors(n).toArray();
     System.out.println(n.getLabel() + " has " + neighbors.length + " neighbors");
 }

 //Iterate over edges
 for (Edge e : directedGraph.getEdges()) {
     System.out.println(e.getSource().getId() + " -> " + e.getTarget().getId());
 }

 //Find node by id
 Node node2 = directedGraph.getNode("n2");

 //Get degree
 System.out.println("Node2 degree: " + directedGraph.getDegree(node2));

 YifanHuLayout layout = new YifanHuLayout(null, new StepDisplacement(1f));
 layout.setGraphModel(graphModel);
 layout.resetPropertiesValues();
 layout.initAlgo();
 for (int i = 0; i < 100 && layout.canAlgo(); i++) {
     layout.goAlgo();
 }
 layout.endAlgo();

 for (Node n : directedGraph.getNodes()) {
     //Note that X/Y values do not change after layout has been run
     System.out.println(n.x() + "," +n.y());
 }