code: func (extr *ContentExtractor) GetFavicon(document *goquery.Document) string {
  	favicon := ""
  	document.Find("link").EachWithBreak(func(i int, s *goquery.Selection) bool {
  		attr, exists := s.Attr("rel")
  		if exists && strings.Contains(attr, "icon") {
  			favicon, _ = s.Attr("href")
  			return false
  		}
  		return true
  	})
  	return favicon
  }
docs: // GetFavicon returns the favicon set in the source, if the article has one