public function toSlack($notifiable)
    {
        return (new SlackMessage())
            ->error()
            ->from(
                config('health.notifications.from.name'),
                config('health.notifications.from.icon_emoji')
            )
            ->content($this->getMessage())
            ->attachment(function ($attachment) {
                $attachment
                    ->title($this->getActionTitle(), $this->getActionLink())
                    ->content($this->result->errorMessage);
            });
    }