gistfile1.txt

func sign(_ signIn: GIDSignIn!, didSignInFor user: GIDGoogleUser!, withError error: Error!) {
        
        if error != nil{
            print(error)
            return
        }else{
            print(user.userID)
            print(user.profile.email)
            print(user.profile.imageURL(withDimension: 400))
        }
    }