public function updateFile($fileId, array $data)
    {
        $xml = "<file>";

        if (isset($data['name'])) {
            $xml .= "<name>{$data['name']}</name>";
        }

        if (isset($data['categoryId'])) {
            $xml .= "<categoryId>{$data['categoryId']}</categoryId>";
        }

        if (isset($data['shareWithEmployee'])) {
            $xml .= "<shareWithEmployee>{$data['shareWithEmployee']}</shareWithEmployee>";
        }

        $xml .= "</file>";

        return $this->post("files/{$fileId}", $xml);
    }