public function getNgAchievementLevel($con = null) { include_once 'lib/model/om/BaseNgAchievementLevelPeer.php'; if ($this->aNgAchievementLevel === null && $this->ng_achievement_level_id !== null) { $this->aNgAchievementLevel = NgAchievementLevelPeer::retrieveByPK($this->ng_achievement_level_id, $con); } return $this->aNgAchievementLevel; }