Flarum\Http\Middleware\AuthenticateWithSession::__invoke PHP Метод

    public function __invoke(Request $request, Response $response, callable $out = null)
    {
        $session = $request->getAttribute('session');
        $actor = $this->getActor($session);
        $actor->setSession($session);
        $request = $request->withAttribute('actor', $actor);
        return $out ? $out($request, $response) : $response;
    }