public function getBotUserId()
    {
        $botUserIdRequest = $this->http->post('https://slack.com/api/auth.test', [], [
            'token' => $this->config->get('token'),
        ]);
        $botUserIdPayload = new ParameterBag((array) json_decode($botUserIdRequest->getContent(), true));

        if ($botUserIdPayload->get('user_id')) {
            $this->botUserID = $botUserIdPayload->get('user_id');
            $this->getBotId();
        }
    }