public function getNgTestApplSched($con = null) { include_once 'lib/model/om/BaseNgTestApplSchedPeer.php'; if ($this->aNgTestApplSched === null && $this->ng_test_appl_sched_id !== null) { $this->aNgTestApplSched = NgTestApplSchedPeer::retrieveByPK($this->ng_test_appl_sched_id, $con); } return $this->aNgTestApplSched; }