How to get Slack notifications working

[jordanade]

When you say "add the route notification method to your user model" referring to the code below,, what does this mean? I don't have a user model. Where can I add this code?

/**
 * Route notifications for the Slack channel.
 *
 * @return string
 */
public function routeNotificationForSlack()
{
    return config('services.slack.webhook_url');
}

[jordanade]

Nevermind, it seems to be working even without the above code.