/**
  * Static wrapper for getting verp and urls.
  *
  * @param int $job_id
  *   ID of the Job associated with this message.
  * @param int $event_queue_id
  *   ID of the EventQueue.
  * @param string $hash
  *   Hash of the EventQueue.
  * @param string $email
  *   Destination address.
  *
  * @return array
  *   (reference) array    array ref that hold array refs to the verp info and urls
  */
 public static function getVerpAndUrls($job_id, $event_queue_id, $hash, $email)
 {
     // create a skeleton object and set its properties that are required by getVerpAndUrlsAndHeaders()
     $config = CRM_Core_Config::singleton();
     $bao = new CRM_Mailing_BAO_Mailing();
     $bao->_domain = CRM_Core_BAO_Domain::getDomain();
     $bao->from_name = $bao->from_email = $bao->subject = '';
     // use $bao's instance method to get verp and urls
     list($verp, $urls, $_) = $bao->getVerpAndUrlsAndHeaders($job_id, $event_queue_id, $hash, $email);
     return array($verp, $urls);
 }