protected function prepareSlackAttachment()
    {
        $attachments = [ ];

        foreach ($this->stats as $stats) {
            $name = $stats['name'];

            $fields = [ ];

            foreach ($stats['values'] as $stat) {
                $count = $stat['value'];
                $since = $stat['since'];

                $fields[] = [
                    "title" => "Since " . $since,
                    "value" => $count,
                    "short" => true
                ];
            }

            $attachments[] = [
                'color'  => 'grey',
                "title"  => "New " . $name . "s",
                "fields" => $fields
            ];
        }

        return $attachments;
    }