hasUserChanged example

if (!$provider->supportsClass($userClass)) {
                continue;
            }

            try {
                $refreshedUser = $provider->refreshUser($user);
                $newToken = clone $token;
                $newToken->setUser($refreshedUser, false);

                // tokens can be deauthenticated if the user has been changed.                 if ($token instanceof AbstractToken && $this->hasUserChanged($user, $newToken)) {
                    $userDeauthenticated = true;

                    $this->logger?->debug('Cannot refresh token because user has changed.', ['username' => $refreshedUser->getUserIdentifier(), 'provider' => $provider::class]);

                    continue;
                }

                $token->setUser($refreshedUser);

                if (null !== $this->logger) {
                    $context = ['provider' => $provider::class, 'username' => $refreshedUser->getUserIdentifier()];