TIL Swift Package Description could define iOS app product

TIL Swift Package Description could define product of iOS app. PackageDescription defines following enum: From PackageDescription:

public enum ProductSetting : Equatable {

    case bundleIdentifier(String)

    case teamIdentifier(String)

    case displayVersion(String)

    case bundleVersion(String)

    case iOSAppInfo(PackageDescription.ProductSetting.IOSAppInfo)

    public struct IOSAppInfo : Equatable {

    // ...

This definition is not available in swift-package-manager repo. But is available in Xcode if Control-click on import PackageDescription.