public function getThumbnail(int $size = 210, bool $ssl = false)
    {
        $thumbs = [];
        foreach ($this->safeGet('thumbnail') as $thumb) {
            $thumbs[$thumb['width']] = $thumb['_link'];
        }

        $sizes = array_keys($thumbs);
        while (true) {
            $thumbSize = array_shift($sizes);
            if ((int) $size <= (int) $thumbSize || count($sizes) === 0) {
                return $thumbs[$thumbSize];
            }
        }
    }