code: public void buildSerializedFormSummaries(XMLNode node, Content serializedTree)
              throws DocletException {
          Content serializedSummariesTree = writer.getSerializedSummariesHeader();
          for (PackageElement pkg : configuration.packages) {
              currentPackage = pkg;
              buildChildren(node, serializedSummariesTree);
          }
          serializedTree.addContent(writer.getSerializedContent(
                  serializedSummariesTree));
      }
docs: Build the serialized form summaries.
  
  @param node the XML element that specifies which components to document
  @param serializedTree content tree to which the documentation will be added
  @throws DocletException if there is a problem while building the documentation