private void saveGraph() {
GraphMLFile writer = new GraphMLFile();
Graph g = (Graph) graph.copy();
for (Iterator edges = g.getEdges().iterator(); edges.hasNext();) {
Edge e = (Edge) edges.next();
e.removeUserDatum(SERVICE_LIST);
}
writer.save(g, System.getProperty("user.home")
+ File.separator
+ "convertGraph.xml");