DecompositionType type = getModelSet().getDecompositionType(name);
if (type == null)
out.println("Unknown ID: " + arg);
else if (args.length < 2)
DotUtils.showGraph(type.bindingGraph());
else {
PrintWriter w = new PrintWriter(args[1]);
try {
type.bindingGraph().printDot(w);
} finally {