fkooman\OAuth\Client\SessionStorage::deleteAccessToken PHP Method

    public function deleteAccessToken(AccessToken $accessToken)
    {
        if (!isset($_SESSION['php-oauth-client']['access_token'])) {
            return false;
        }
        foreach ($_SESSION['php-oauth-client']['access_token'] as $k => $t) {
            $token = unserialize($t);
            if ($accessToken->getAccessToken() !== $token->getAccessToken()) {
                continue;
            }
            unset($_SESSION['php-oauth-client']['access_token'][$k]);
            return true;
        }
        return false;
    }