def create_or_update_lun_id(self, volume_id, lun_id):
        """Set the LUN ID on a volume.

        :param integer volume_id: The id of the volume
        :param integer lun_id: LUN ID to set on the volume
        :return: a SoftLayer_Network_Storage_Property object
        """
        return self.client.call('Network_Storage', 'createOrUpdateLunId',
                                lun_id, id=volume_id)