private function parse_name($name) {
        $bits = explode('/', $name);
        $name = array_pop($bits);
        $plugin = '';
        if ($bits) {
            $plugin = array_pop($bits);
            if ($plugin === 'moodle') {
                $plugin = '';
            }
        }
        return 's_'.$plugin.'_'.$name;
    }