private void toXml(XmppStreamWriter out, DataReported reported)
      throws IOException, XMLStreamException {
    out.writeStartElement("reported");

    DataField[] fields = reported.getField();
    if (fields != null) {
      for (int i = 0; i < fields.length; i++) {
        toXml(out, fields[i]);
      }
    }

    out.writeEndElement(); // </reported>
  }