/**
     * @param $directory
     * @param $manufacturerId
     * @param $productId
     *
     * @return string
     */
    public function download($directory, $manufacturerId, $productId)
    {
        $extension = pathinfo($this->source, PATHINFO_EXTENSION);
        $title = Nette\Utils\Strings::webalize($this->title);
        $imageName = 'feed_' . $manufacturerId . '.' . $productId . '.' . $title . '.' . $extension;

        $try = 3;
        do {
            $targetPath = $directory . '/' . $imageName;
            if (!file_exists($targetPath) && ($imageRaw = @file_get_contents($this->source))) {
                @file_put_contents($targetPath, $imageRaw);
                @chmod($targetPath, 0777);
            }

            if (FALSE === getimagesize($targetPath)) {
                unlink($targetPath);

            } else {
                break;
            }

        } while($try--);

        return $imageName;
    }