public function BulletinModifyTopics($modify_topic)
 {
     // $modify_topic : CbgrnBulletinModifyTopicType class or this array
     $this->CheckAndSetHeader(__FUNCTION__);
     $reg_args["modify_topic"] = $this->getRegularArgs($modify_topic, __FUNCTION__, "CbgrnBulletinModifyTopicType");
     $this->encodeString($reg_args);
     $results = parent::BulletinModifyTopics($reg_args);
     $this->methodClose();
     return $this->RetvalConvertArray($results->topic);
 }