code: public static String laxSubstringByCodepoints(String s, int startIndexInclusive,
        int endIndexExclusive) {
      return substringByCodepoints(s, startIndexInclusive, endIndexExclusive, true);
    }
docs: Acts just like {@link #laxSubstringByCodepoints(String, int, int)} except that if either
  index is out-of-bounds, it is clipped to the most extreme legal value.
  This guarantees that as long as {@code s} is non-null and
  {@code endIndexExclusive>=startIndexInclusive}, no exception will be thrown when
  calling this method.