*/
        ClassLoader finalizerLoader = newLoader(getBaseUrl());
        return finalizerLoader.loadClass(FINALIZER_CLASS_NAME);
      } catch (Exception e) {
        logger.log(Level.WARNING, LOADING_ERROR, e);
        return null;
      }
    }

    /** Gets URL for base of path containing Finalizer.class. */
    URL getBaseUrl() throws IOException {
      // Find URL pointing to Finalizer.class file.

       */
      try (URLClassLoader finalizerLoader = newLoader(getBaseUrl())) {
        return finalizerLoader.loadClass(FINALIZER_CLASS_NAME);
      } catch (Exception e) {
        logger.log(Level.WARNING, LOADING_ERROR, e);
        return null;
      }
    }

    /** Gets URL for base of path containing Finalizer.class. */
    URL getBaseUrl() throws IOException {
      // Find URL pointing to Finalizer.class file.

        List<RequestData> anchorList = new ArrayList<>();
        final String baseHref = getBaseHref(document);
        try {
            final URL url = getBaseUrl(responseData.getUrl(), baseHref);
            for (final Map.Entry<String, String> entry : childUrlRuleMap.entrySet()) {

        URL value;

        value = transformer.getBaseUrl("http://hoge.com/", null);
        assertEquals("http://hoge.com/", value.toExternalForm());

        value = transformer.getBaseUrl("http://hoge.com/", "http://hoge.com/");
        assertEquals("http://hoge.com/", value.toExternalForm());

        value = transformer.getBaseUrl("http://hoge.com/aaa/bbb.html", "http://hoge.com/");