Element_OphTrOperationbooking_ScheduleOperation::model PHP Method

    public static function model($className = __CLASS__)
    {
        return parent::model($className);
    }

 public function getSchedule_timeframe()
 {
     return Element_OphTrOperationbooking_ScheduleOperation::model()->find('event_id=?', array($this->event_id));
 }