static void ai_spec_tripelize(S s) {
  if (tok_containsSimpleArrow(tok_combineCurlyBrackets(javaTok(s)))) {
    ifdef ai_spec_tripelize_debug
      print("ai_spec_tripelize skipping: " + s);
    endifdef
    ret;
  }
  new Matches m;
  T3<S> t = ai_tripelize(s);
  ifdef ai_spec_tripelize_debug
    print("ai_spec_tripelize got: " + s + " => " + ai_renderTriple(t));
  endifdef
  if (!ai_trivialTriple(t))
    ai_postTriple(s, "possibly parses to triple", ai_renderTriple(t));
}