scanner.next();
        boolean isEnd = false;
        if (scanner.lookingAt('/')) {
            isEnd = true;
            scanner.next();
        }

        // element name
        scanner.skip(WHITESPACE_WITH_EOL);
        scanner.mark();
        scanner.find(END_ELEMENT_NAME);
        String elementName = scanner.region().toLowerCase();
        if (isEnd) {