mapdev\FacebookMessenger\Callback::postbackMessages PHP Метод

    public function postbackMessages()
    {
        $result = [];
        foreach ($this->entries as $entry) {
            foreach ($entry->messages as $entryMessage) {
                if ($entryMessage->isPostback) {
                    $result[] = $entryMessage;
                }
            }
        }
        return collect($result);
    }