code: public DocCommentDuo getHtmlCommentDuo(Element e) {
          FileObject fo = null;
          PackageElement pe = null;
          switch (e.getKind()) {
              case OTHER:
                  fo = configuration.getOverviewPath();
                  pe = configuration.workArounds.getUnnamedPackage();
                  break;
              case PACKAGE:
                  fo = configuration.workArounds.getJavaFileObject((PackageElement)e);
                  pe = (PackageElement)e;
                  break;
              default:
                  return null;
          }
          if (fo == null) {
              return null;
          }
  
          DocCommentTree dcTree = trees.getDocCommentTree(fo);
          if (dcTree == null) {
              return null;
          }
          DocTreePath treePath = trees.getDocTreePath(fo, pe);
          return new DocCommentDuo(treePath.getTreePath(), dcTree);
      }
docs: /*
  Returns the TreePath/DocCommentTree duo for html sources.