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/");