/**
  * Skip any further processing and immediately respond with a redirect to the passed URL.
  *
  * @param string $destURL
  */
 protected static function force_redirect($destURL)
 {
     $response = new HTTPResponse();
     $response->redirect($destURL, 301);
     HTTP::add_cache_headers($response);
     // TODO: Use an exception - ATM we can be called from _config.php, before Director#handleRequest's try block
     $response->output();
     die;
 }