mapdev\FacebookMessenger\Callback\EntryMessage::updateAuthentication PHP Метод

    private function updateAuthentication()
    {
        $this->isAuthentication = !is_null(Helper::array_find($this->_message, 'authentication'));
        if ($this->isAuthentication) {
            $this->authentication = new Authentication(Helper::array_find($this->_message, 'authentication'));
        }
    }