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);
            }
            public void OnSuccess(Java.Lang.Object signInAccount)
            {
                GoogleSignInAccount googleSignInAccount = (GoogleSignInAccount)signInAccount;
                string authCode = googleSignInAccount.ServerAuthCode;

                Log.Debug("GooglePlaySignInListener", "Successfuly. Auth code: " + authCode);
                IAGConnectAuthCredential credential = GoogleGameAuthProvider.CredentialWithToken(authCode);

                loginActivity.SignIn(credential);
            }
            public void OnSuccess(Java.Lang.Object signInAccount)
            {
                GoogleSignInAccount googleSignInAccount = (GoogleSignInAccount)signInAccount;
                string idToken = googleSignInAccount.IdToken;

                Log.Debug("GoogleSignInlistener", "Successfuly. Access token: " + idToken);
                IAGConnectAuthCredential credential = GoogleAuthProvider.CredentialWithToken(idToken);

                loginActivity.SignIn(credential);
            }