private function getBotId()
    {
        $botUserRequest = $this->http->post('https://slack.com/api/users.info', [], [
            'user' => $this->botUserID,
            'token' => $this->config->get('token'),
        ]);
        $botUserPayload = (array) json_decode($botUserRequest->getContent(), true);

        if ($botUserPayload['user']['is_bot']) {
            $this->botID = $botUserPayload['user']['profile']['bot_id'];
        }
    }