protected function registerHandlers()
    {
        $this->on(self::EVENT_AUTHORIZED, Authorized::class);
        $this->on(self::EVENT_UNAUTHORIZED, Unauthorized::class);
        $this->on(self::EVENT_UPDATE_AUTHORIZED, UpdateAuthorized::class);
        $this->on(self::EVENT_COMPONENT_VERIFY_TICKET, VerifyTicketRefreshed::class);
    }