Arkade\S3\Model\MediaStorage\Config\Source\Storage\Media\Storage\Plugin::afterToOptionArray PHP Метод

    public function afterToOptionArray($subject, $result)
    {
        $result[] = ['value' => \Arkade\S3\Model\MediaStorage\File\Storage::STORAGE_MEDIA_S3, 'label' => __('Amazon S3')];
        return $result;
    }