code: @Override
      public void build(XMLNode node, Content contentTree) throws DocletException {
          if (hasMembersToDocument()) {
              super.build(node, contentTree);
          }
      }
docs: Builds the sub component if there is anything to document.
  
  @param node the XML element that specifies which components to document.
  @param contentTree content tree to which the documentation will be added
  @throws DocletException if there is a problem while building the documentation