docs: public void writeTo(final PacketOutputStream pos) throws IOException {
      DateTimeFormatter formatter = DateTimeFormatter.ofPattern(
          fractionalSeconds ? "yyyy-MM-dd HH:mm:ss.SSSSSS" : "yyyy-MM-dd HH:mm:ss", Locale.ENGLISH);
      pos.write(QUOTE);
      pos.write(formatter.format(tz).getBytes());
      pos.write(QUOTE);
    }