public URLNormalizer lowerCaseSchemeHost() {
        URL u = toURL();
        url = Pattern.compile(u.getProtocol(),
                Pattern.CASE_INSENSITIVE).matcher(url).replaceFirst(
                u.getProtocol().toLowerCase());
        url = Pattern.compile(u.getHost(),
                Pattern.CASE_INSENSITIVE).matcher(url).replaceFirst(
                u.getHost().toLowerCase());
        return this;
    }
@Test
    public void testLowerCaseSchemeHost() {
        s = "HTTP://www.Example.com/Hello.html";
        t = "http://www.example.com/Hello.html";
        assertEquals(t, n(s).lowerCaseSchemeHost().toString());
    }