How to use the @0x/contract-artifacts.DutchAuction function in @0x/contract-artifacts

assetDataUtils.encodeERC20AssetData(zrxToken.address),
        assetDataUtils.encodeERC20AssetData(etherToken.address),
    );

    // OrderValidator
    const orderValidator = await wrappers.OrderValidatorContract.deployFrom0xArtifactAsync(
        artifacts.OrderValidator,
        provider,
        txDefaults,
        exchange.address,
        zrxAssetData,
    );

    // DutchAuction
    const dutchAuction = await wrappers.DutchAuctionContract.deployFrom0xArtifactAsync(
        artifacts.DutchAuction,
        provider,
        txDefaults,
        exchange.address,
    );

    // Multisigs
    const accounts: string[] = await web3Wrapper.getAvailableAddressesAsync();
    const owners = _.uniq([accounts[0], accounts[1], txDefaults.from]);
    const confirmationsRequired = new BigNumber(2);
    const secondsRequired = new BigNumber(0);

    // AssetProxyOwner
    const assetProxyOwner = await wrappers.AssetProxyOwnerContract.deployFrom0xArtifactAsync(
        artifacts.AssetProxyOwner,
        provider,
        txDefaults,