/**
  * Returns all of the {@link DMRecord}s within this Set to the state they were in on the given date.
  * @param ref object $date A {@link DateAndTime} object.
  * @access public
  * @return boolean
  */
 function revertToDate($date)
 {
     $this->loadRecords(RECORD_FULL);
     parent::revertToDate($date);
 }