protected void extract(CrawlURI curi, CharSequence cs) {
Source source = new Source(cs);
List<Element> elements = source.findAllElements(StartTagType.NORMAL);
for (Element element : elements) {
String elementName = element.getName();
Attributes attributes;
if (elementName.equals(HTMLElementName.META)) {
if (processMeta(curi, element)) {
// meta tag included NOFOLLOW; abort processing
break;
}