static ItIt<Short> toIterator(ShortIterator it) {
  ret it == null ?: new ItIt<Short> {
    public bool hasNext() { ret it.hasNext(); }
    public Short next() { ret it.next(); }
  };
}

static CloseableItIt<Short> toIterator(CloseableShortIterator it) {
  ret it == null ?: new CloseableItIt<Short> {
    close { pClose(it); }
    public bool hasNext() { ret it.hasNext(); }
    public Short next() { ret it.next(); }
  };
}

Began life as a copy of #1029302