How do I access Microsoft.Owin.Security.xyz OnAuthenticated context AddClaims values?

Question

I\'m trying to retrieve user properties that are returned as the OnAuthenticated context and added as a claims following this example: How to access Facebook private inform

Answer 1

In short the line that is required once AddClaim is used is as follows:

Taken from johns answer above.

ClaimsIdentity ext = await AuthenticationManager.GetExternalIdentityAsync(DefaultAuthenticationTypes.ExternalCookie);