code: protected void buildChildren(XMLNode node, Content contentTree) throws DocletException {
          for (XMLNode child : node.children)
              build(child, contentTree);
      }
docs: Build the documentation, as specified by the children of the given XML element.
  
  @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 children