public function getIdentifier($namespace)
    {
        $namespace = Str::normalizeClassName($namespace);
        if (strpos($namespace, '\\') === null) {
            return $namespace;
        }

        $parts = explode('\\', $namespace);
        $slice = array_slice($parts, 1, 2);
        $namespace = implode('.', $slice);

        return $namespace;
    }