protected function createImagesList($media)
    {
        $url = $media->thumbnail_url;
        $width = $media->thumbnail_width;
        $height = $media->thumbnail_height;

        return array(
            array(
                'url'    => $url,
                'width'  => $width,
                'height' => $height,
                'area'   => ($width * $height)
            )
        );
    }