code: public void buildSerializableFields(XMLNode node, Content classContentTree)
              throws DocletException {
          SortedSet<VariableElement> members = utils.serializableFields(currentTypeElement);
          if (!members.isEmpty()) {
              Content serializableFieldsTree = fieldWriter.getSerializableFieldsHeader();
              for (VariableElement ve : members) {
                  currentMember = ve;
                  if (!utils.definesSerializableFields(currentTypeElement)) {
                      Content fieldsContentTree = fieldWriter.getFieldsContentHeader(
                              currentMember == members.last());
                      buildChildren(node, fieldsContentTree);
                      serializableFieldsTree.addContent(fieldsContentTree);
                  } else {
                      buildSerialFieldTagsInfo(serializableFieldsTree);
                  }
              }
              classContentTree.addContent(fieldWriter.getSerializableFields(
                      configuration.getText("doclet.Serialized_Form_fields"),
                      serializableFieldsTree));
          }
      }
docs: Build the summaries for the fields that belong to the given class.
  
  @param node the XML element that specifies which components to document
  @param classContentTree content tree to which the documentation will be added
  @throws DocletException if there is a problem while building the documentation