How to use the @0x/contract-artifacts.DummyERC20Token function in @0x/contract-artifacts

// Exchange
    const exchange = await ExchangeContract.deployFrom0xArtifactAsync(
        artifacts.Exchange,
        provider,
        txDefaults,
        artifacts,
        chainId,
    );

    // Dummy ERC20 tokens
    for (const token of erc20TokenInfo) {
        const totalSupply = new BigNumber(1000000000000000000000000000);
        // tslint:disable-next-line:no-unused-variable
        const dummyErc20Token = await DummyERC20TokenContract.deployFrom0xArtifactAsync(
            artifacts.DummyERC20Token,
            provider,
            txDefaults,
            artifacts,
            token.name,
            token.symbol,
            token.decimals,
            totalSupply,
        );
    }

    // ERC721
    // tslint:disable-next-line:no-unused-variable
    const cryptoKittieToken = await DummyERC721TokenContract.deployFrom0xArtifactAsync(
        artifacts.DummyERC721Token,
        provider,
        txDefaults,

// Exchange
    const zrxAssetData = assetDataUtils.encodeERC20AssetData(zrxToken.address);
    const exchange = await wrappers.ExchangeContract.deployFrom0xArtifactAsync(
        artifacts.Exchange,
        provider,
        txDefaults,
        zrxAssetData,
        new BigNumber(chainId),
    );

    // Dummy ERC20 tokens
    for (const token of erc20TokenInfo) {
        const totalSupply = new BigNumber(1000000000000000000000000000);
        // tslint:disable-next-line:no-unused-variable
        const dummyErc20Token = await wrappers.DummyERC20TokenContract.deployFrom0xArtifactAsync(
            artifacts.DummyERC20Token,
            provider,
            txDefaults,
            token.name,
            token.symbol,
            token.decimals,
            totalSupply,
        );
    }

    // ERC721
    // tslint:disable-next-line:no-unused-variable
    const cryptoKittieToken = await wrappers.DummyERC721TokenContract.deployFrom0xArtifactAsync(
        artifacts.DummyERC721Token,
        provider,
        txDefaults,
        erc721TokenInfo[0].name,

const erc20Proxy = await ERC20ProxyContract.deployFrom0xArtifactAsync(
        artifacts.ERC20Proxy,
        provider,
        txDefaults,
        artifacts,
    );
    const erc721Proxy = await ERC721ProxyContract.deployFrom0xArtifactAsync(
        artifacts.ERC721Proxy,
        provider,
        txDefaults,
        artifacts,
    );

    // ZRX
    const zrxToken = await DummyERC20TokenContract.deployFrom0xArtifactAsync(
        artifacts.DummyERC20Token,
        provider,
        txDefaults,
        artifacts,
        '0x Protocol Token',
        'ZRX',
        new BigNumber(18),
        new BigNumber(1000000000000000000000000000),
    );

    // Ether token
    const etherToken = await WETH9Contract.deployFrom0xArtifactAsync(artifacts.WETH9, provider, txDefaults, artifacts);

    // Exchange
    const exchange = await ExchangeContract.deployFrom0xArtifactAsync(
        artifacts.Exchange,
        provider,

private async _increaseERC20BalanceAsync(tokenAddress: string, address: string, amount: BigNumber): Promise {
        const erc20Token = new DummyERC20TokenContract(
            artifacts.DummyERC20Token.compilerOutput.abi,
            tokenAddress,
            this._web3Wrapper.getProvider(),
            this._web3Wrapper.getContractDefaults(),
        );
        const txHash = await erc20Token.transfer.sendTransactionAsync(address, amount, {
            from: this._coinbase,
        });
        await this._web3Wrapper.awaitTransactionSuccessAsync(txHash, constants.AWAIT_TRANSACTION_MINED_MS);
    }
    private async _increaseERC20AllowanceAsync(

private async _increaseERC20AllowanceAsync(
        tokenAddress: string,
        address: string,
        amount: BigNumber,
    ): Promise {
        const erc20Token = new DummyERC20TokenContract(
            artifacts.DummyERC20Token.compilerOutput.abi,
            tokenAddress,
            this._web3Wrapper.getProvider(),
            this._web3Wrapper.getContractDefaults(),
        );
        const oldMakerAllowance = await erc20Token.allowance.callAsync(address, this._erc20ProxyAddress);
        const newMakerAllowance = oldMakerAllowance.plus(amount);

        const txHash = await erc20Token.approve.sendTransactionAsync(this._erc20ProxyAddress, newMakerAllowance, {
            from: address,
        });
        await this._web3Wrapper.awaitTransactionSuccessAsync(txHash, constants.AWAIT_TRANSACTION_MINED_MS);
    }
    private async _increaseBalanceAndAllowanceWithAssetDataAsync(