public function minifiedSrc($identifier, $render = false) {
        $config = Zend_Registry::get('config');
        if (empty($config->assets->js->{$identifier})) {
            throw new Garp_Exception(
                "JS configuration for identifier {$identifier} not found. " .
                "Please configure assets.js.{$identifier}"
            );
        }
        $jsRoot = rtrim($config->assets->js->basePath ?: '/js', '/') . '/';
        $config = $config->assets->js->{$identifier};
        if (!isset($config->disabled) || !$config->disabled) {
            // If minification is not disabled (for instance in a development environment),
            // return the path to the minified file.
            return $this->src($jsRoot . $config->filename, $render);
        } else {
            // Otherwise, return all the script tags for all the individual source files
            if (!isset($config->sourcefiles)) {
                return '';
            }
            $out = '';
            foreach ($config->sourcefiles as $sourceFile) {
                $response = $this->src($jsRoot . $sourceFile, $render);
                if ($render) {
                    $out .= $response;
                }
            }
            if ($render) {
                return $out;
            }
            return $this;
        }
    }