public function sendCodeceptionOutputToSlack($slackChannel, $slackToken = null, $codeceptionOutputFolder = null)
    {
        if (is_null($slackToken)) {
            $this->say('we are in Travis environment, getting token from ENV');

            // Remind to set the token in repo Travis settings,
            // see: http://docs.travis-ci.com/user/environment-variables/#Using-Settings
            $slackToken = getenv('SLACK_ENCRYPTED_TOKEN');
        }

        $result = $this
            ->taskSendCodeceptionOutputToSlack(
                $slackChannel,
                $slackToken,
                $codeceptionOutputFolder
            )
            ->run();

        return $result;
    }