code: public void buildModuleDoc(XMLNode node, Content contentTree) throws DocletException {
          contentTree = moduleWriter.getModuleHeader(mdle.getQualifiedName().toString());
          buildChildren(node, contentTree);
          moduleWriter.addModuleFooter(contentTree);
          moduleWriter.printDocument(contentTree);
          utils.copyDirectory(mdle, DocPaths.moduleSummary(mdle));
      }
docs: Build the module documentation.
  
  @param node the XML element that specifies which components to document
  @param contentTree the content tree to which the documentation will be added
  @throws DocletException if there is a problem while building the documentation