docs: public URL getIndexPage() {
          // In the current impl dependencies are checked first, so the plugin itself
          // will add the last entry in the getResources result.
          URL idx = null;
          try {
              Enumeration<URL> en = classLoader.getResources("index.jelly");
              while (en.hasMoreElements())
                  idx = en.nextElement();
          } catch (IOException ignore) { }
          // In case plugin has dependencies but is missing its own index.jelly,
          // check that result has this plugin's artifactId in it:
          return idx != null && idx.toString().contains(shortName) ? idx : null;
      }