code: public void buildSignature(XMLNode node, Content enumConstantsTree) {
          enumConstantsTree.addContent(writer.getSignature(
                  (FieldDoc) enumConstants.get(currentEnumConstantsIndex)));
      }
docs: Build the signature.
  
  @param node the XML element that specifies which components to document
  @param enumConstantsTree the content tree to which the documentation will be added