/**
     * XMLを解析します。
     *
     * @param builder
     *            {@link DocumentBuilder}。{@literal null}であってはいけません
     * @param is
     *            入力ストリーム。{@literal null}であってはいけません
     * @return {@link Document}
     */
    public static Document parse(final DocumentBuilder builder, final InputStream is) {
        assertArgumentNotNull("builder", builder);
        assertArgumentNotNull("is", is);

        try {

    /**
     * @throws Exception
     */
    @Test
    public void testReaderToStringBuilder() throws Exception {
        final int result = copy(reader, builder);
        assertThat(result, is(srcString.length()));
        assertThat(new String(builder), is(srcString));
    }

    /**
     * @throws Exception
     */
    @Test
    public void testUrlToWriter() throws Exception {

    }

    /**
     * @throws Exception
     */
    public void testToString() throws Exception {
        final DocumentBuilder builder = DocumentBuilderFactoryUtil.newDocumentBuilder();
        final Document doc = DocumentBuilderUtil.parse(builder, ResourceUtil.getResourceAsStream("org/codelibs/core/xml/test1.xml"));
        final Element root = doc.getDocumentElement();