// We modify the graph in the main thread.
Node A = main.addNode("A");
Node B = main.addNode("B");
Node C = main.addNode("C");
main.addEdge("AB", "A", "B");
main.addEdge("BC", "B", "C");
main.addEdge("CA", "C", "A");
SpriteManager sman = new SpriteManager(main);