static Constructor findConstructor_precise_onTypes(Class c, Class... argTypes) ctex {
  L<Constructor> ctors = constructorsWithNumberOfArguments(c, l(argTypes);
  new Lowest<Constructor> best;
  if (ctors != null) for (Constructor ctor : ctors) {
    int score = methodApplicabilityScore_onTypes(ctor, argTypes);
    if (score < Int.MAX_VALUE)
      best.put(ctor, score);
  }
  ret best!;
}