public function inOu($ou, $strict = false)
    {
        if ($ou instanceof Model) {
            // If we've been given an OU model, we can
            // just check if the OU's DN is inside
            // the current models DN.
            return (bool) strpos($this->getDn(), $ou->getDn());
        }

        $suffix = $strict ? '' : 'i';

        return (bool) preg_grep("/{$ou}/{$suffix}", $this->getDnBuilder()->getComponents('ou'));
    }