public function getUrl($fullBase = true)
    {
        is_true_or_fail(!empty($this->target), __d(
            'thumber',
            'Missing path of the generated thumbnail. Probably the `{0}` method has not been invoked',
            'save()'
        ), InvalidArgumentException::class);

        return Router::url(['_name' => 'thumb', base64_encode(basename($this->target))], $fullBase);
    }