public function filterSettlementInfoTableMetaKeys($keys) {
        // V1 keys
        $keys = !empty($keys) ? $keys : [];
        $keys[] = 'amazon_orderid';
        $keys[] = 'amazon_authid';

        // V2 keys
        $keys[] = OrderMeta::CHARGE_PERMISSION_ID;
        $keys[] = OrderMeta::CHARGE_ID;
        $keys[] = OrderMeta::REFUND_ID;
        $keys[] = OrderMeta::LINK_KEY;
        return $keys;
    }