code: public void doGet(String url, HttpResponse response, Map<String, Object> headers, boolean followRedirect) {
          response.setRequest(url);
          httpClient.get(url, response, headers, followRedirect);
      }
docs: GETs content from URL.
  @param url url to get from.
  @param response response to store url and response value in.
  @param headers http headers to add.