How to use the @0x/contracts-asset-proxy.artifacts.ERC20Proxy function in @0x/contracts-asset-proxy

protected static async _deployAssetProxyContractsAsync(
        environment: BlockchainTestsEnvironment,
        txDefaults: Partial,
    ): Promise {
        const erc20Proxy = await ERC20ProxyContract.deployFrom0xArtifactAsync(
            assetProxyArtifacts.ERC20Proxy,
            environment.provider,
            txDefaults,
            assetProxyArtifacts,
        );
        const erc721Proxy = await ERC721ProxyContract.deployFrom0xArtifactAsync(
            assetProxyArtifacts.ERC721Proxy,
            environment.provider,
            txDefaults,
            assetProxyArtifacts,
        );
        const erc1155Proxy = await ERC1155ProxyContract.deployFrom0xArtifactAsync(
            assetProxyArtifacts.ERC1155Proxy,
            environment.provider,
            txDefaults,
            assetProxyArtifacts,
        );