Missing property in example

[oavila81]

Just add auth property to access method signInWithPopup or signOut:
this.auth.auth.signInWithPopup(new auth.GoogleAuthProvider());

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[googlebot]

Thanks for your pull request. It looks like this may be your first contribution to a Google open source project (if not, look below for help). Before we can look at your pull request, you'll need to sign a Contributor License Agreement (CLA).

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[oavila81]

@googlebot I signed it!

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CLAs look good, thanks!

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[Splaktar]

I think that the approach in PR #2483 is better. I.e.

this.afAuth.auth.

[jamesdaniels]

As of AngularFire v6 .auth isn't needed anymore to call methods on the instantiated auth instance, we use a Proxy to mirror the JS SDK.