code: public static Response delete(String url, String username, String password)
          throws URISyntaxException, HttpException {
          return send(new HttpDelete(url), new UsernamePasswordCredentials(username, password), null);
      }
docs: Performs an HTTP DELETE on the given URL.
  
  @param url      The URL to connect to.
  @param username username
  @param password password
  @return The HTTP response as Response object.
  @throws URISyntaxException
  @throws HttpException