function sendTaskReminderNotifications($qid = 0, $user_id = 0)
 {
     include_once 'maestro_notification.class.php';
     if ($qid == 0) {
         $qid = $this->_queueId;
     }
     $message = variable_get('maestro_reminder_message');
     $subject = variable_get('maestro_reminder_subject');
     $notification = new MaestroNotification($message, $subject, $qid, MaestroNotificationTypes::REMINDER);
     if ($user_id != 0) {
         $notification->setUserIDs($user_id);
     }
     $notification->notify();
 }