public void OnSuccess(Java.Lang.Object result)
            {
                LoginResult loginResult = (LoginResult)result;

                Log.Debug("IFacebookCallback", "Facebook login successfuly. Access token: " + loginResult.AccessToken.Token);
                IAGConnectAuthCredential credential = FacebookAuthProvider.CredentialWithToken(loginResult.AccessToken.Token);

                loginActivity.SignIn(credential);
            }