public function listMultipartUploads($bucketName, $options = array())
    {
        list(
            $config,
            $keyMarker,
            $maxUploads,
            $delimiter,
            $prefix
        ) = $this->parseOptions(
            $options,
            BosOptions::CONFIG,
            BosOptions::MARKER,
            BosOptions::LIMIT,
            BosOptions::DELIMITER,
            BosOptions::PREFIX
        );
        $params = array();
        $params['uploads'] = '';
        if ($keyMarker !== null) {
            $params['keyMarker'] = $keyMarker;
        }
        if ($maxUploads !== null) {
            if (is_numeric($maxUploads)) {
                $maxUploads = number_format($maxUploads);
                $maxUploads = str_replace(',','',$maxUploads);
            }
            $params['maxUploads'] = $maxUploads;
        }
        if ($delimiter !== null) {
            $params['delimiter'] = $delimiter;
        }
        if ($prefix !== null) {
            $params['prefix'] = $prefix;
        }

        return $this->sendRequest(
            HttpMethod::GET,
            array(
                BosOptions::CONFIG => $config,
                'bucket_name' => $bucketName,
                'params' => $params,
            )
        );
    }