/** {@inheritDoc} */
  public void initializeFrom(Element element) throws DocumentSerializationException {
    for (Enumeration e = element.getChildren(); e.hasMoreElements(); ) {
      Element childElement = (TextElement) e.nextElement();
      String tagName = (String) childElement.getKey();

      if (tagName.equals("transportMetric")) {
        TransportMetric transportMetric =
            (TransportMetric)
                DocumentSerializableUtilities.getDocumentSerializable(
                    childElement, TransportMetric.class);
        transportMetrics.add(transportMetric);
      }
      if (tagName.equals("moduleClassID")) {
        try {
          moduleClassID =
              (ModuleClassID)
                  IDFactory.fromURI(new URI(DocumentSerializableUtilities.getString(childElement)));
        } catch (URISyntaxException jex) {
          throw new DocumentSerializationException("Can't read moduleClassID", jex);
        }
      }
    }
  }
 /** Append a Transport Metric */
 public void addTransportMetric(TransportMetric transportMetric) {
   transportMetrics.add(transportMetric);
 }