Kreait : verifySessionCookie() not found - firebase-authentication

Question

I try to verify a session cookie from the $sessionCookieString = $auth->createSessionCookie($idToken, $oneWeek); which work normally.
But report say that the function is not found.
"Call to undefined method Kreait\Firebase\Auth::verifySessionCookie()"
Didn't understand why.
i have the latest version install.
--- Portion of code below ---
use Kreait\Firebase\Factory;
use Kreait\Firebase\Contract\Auth;
use Kreait\Firebase\Auth\UserQuery;
use Google\Cloud\Firestore\FirestoreClient;
use Kreait\Firebase\Auth\CreateSessionCookie\FailedToCreateSessionCookie;
public function doLogin() {
$factory = (new Factory)->withServiceAccount($this->ekonysJson );
$auth = $factory->createAuth();
$this->auth = $auth;
//print_r($auth);
$signInResult = $auth->signInWithEmailAndPassword("email#dot", "password");
$idToken = $signInResult->idToken();
`print_r($signInResult->refreshToken());`
$oneWeek = new \DateInterval('P7D');
$sessionCookieString = $auth->createSessionCookie($idToken, $oneWeek);
$verifiedSessionCookie = $auth->verifySessionCookie($sessionCookieString)
}
refer to doc https://firebase-php.readthedocs.io/en/stable/authentication.html#session-cookies
if you have any idea.... thanks
Solution for this problem