static String find(String pattern, String text) {
  Matcher matcher = Pattern.compile(pattern).matcher(text);
  if (matcher.find())
    return matcher.group(1);
  return null;
}

static <A> A find(Collection<A> c, O... data) {
  for (A x : c)
    if (checkFields(x, data))
      ret x;
  ret null;
}