public function getSubdistrict($con = null) { include_once 'lib/model/om/BaseSubdistrictPeer.php'; if ($this->aSubdistrict === null && $this->subdistrict_id !== null) { $this->aSubdistrict = SubdistrictPeer::retrieveByPK($this->subdistrict_id, $con); } return $this->aSubdistrict; }