private function setClientFilename($clientFilename)
    {
        if (preg_match('`[/\\]+`', $clientFilename) > 0) {
            throw new \InvalidArgumentException('Filename contain invalid character "\" or "/" in his name.');
        }

        $this->clientFilename = (empty($clientFilename) ? null : (string) $clientFilename);

        return $this;
    }