How to add prompt: consent to user auth flow?

We need the user to consent on every login attempt and on web you can set prompt = consent. However, I'm having a difficult time trying to achieve this on mobile. Is this implemented and if so, can someone help provide guidance on how to implement this?


Currently, we're doing:

```
private lazy var configuration: GIDConfiguration = {
return GIDConfiguration(clientID: clientID, serverClientID: serverClientId)
}()

GIDSignIn.sharedInstance.signIn(with: configuration,
presenting: rootViewController) { user, error in

}
```