/**
  * This method is a proxy menthod for the rental_notification::populate_workbench_notifications 
  * method so that it can be called from the Asynchservice in PHPGWAPI
  * 
  * @param $day the day to populate the workbench
  * @return unknown_type
  */
 public static function populate_workbench($day = null)
 {
     rental_notification::populate_workbench_notifications($day);
 }