private Maybe<PyCallable> fromPacked(Maybe<String> maybeName) {
    if (maybeName.isDefined()) {
      final String value = maybeName.value();
      if (value == null || PyNames.NONE.equals(value)) {
        return NONE;
      }
      PyFunction method = findMethodByName(value, true, null);
      if (method != null) return new Maybe<>(method);
    }
    return UNKNOWN_CALL;
  }
private Maybe<PyCallable> fromPacked(Maybe<String> maybeName)