code: public void buildFieldDeprecationInfo(XMLNode node, Content fieldsContentTree) {
          if (!utils.definesSerializableFields(currentTypeElement)) {
              fieldWriter.addMemberDeprecatedInfo((VariableElement)currentMember,
                      fieldsContentTree);
          }
      }
docs: Build the field deprecation information.
  
  @param node the XML element that specifies which components to document
  @param fieldsContentTree content tree to which the documentation will be added