code: public Set<CrawlerURL> get(HTMLPageResponse theResponse) {
  
      final String url = theResponse.getUrl();
  
      Set<CrawlerURL> ahrefs = new HashSet<CrawlerURL>();
  
      // only populate if we have a valid response, else return empty set
      if (theResponse.getResponseCode() == HttpStatus.SC_OK) {
        ahrefs = fetch(AHREF, ABS_HREF, theResponse.getBody(), url);
      }
  
      return ahrefs;
    }
docs: Get all ahref links within this page response.
  
  @param theResponse the response from the request to this page
  @return the urls.