DOTGenerator dot = new DOTGenerator(g);
System.out.println(dot.getDOT(g.atn.ruleToStartState[g.getRule(ruleName).index]));
Rule r = g.getRule(ruleName);
ATNState startState = g.atn.ruleToStartState[r.index];
ATNPrinter serializer = new ATNPrinter(g, startState);
String result = serializer.asString();
//System.out.print(result);
assertEquals(expecting, result);
}