code: private void getIndex(PrintWriter out) {
          out.append("<html><body>WSDL Index<ul>\n");
          Iterator<String> names = _WSDL_PATHS.keySet().iterator();
          while (names.hasNext()) {
              String name = names.next();
              out.append("<li> <a href=\"?api=" + name + "\">" + name
                      + "</a></li>\n");
          }
          out.append("</ul></body></html>");
      }
docs: Get a simple HTML index pointing to each WSDL file provided by the
  servlet.