public function getBucketMeta($bucket, $options = NULL)
    {
        $this->precheckCommon($bucket, NULL, $options, false);
        $options[self::OSS_BUCKET] = $bucket;
        $options[self::OSS_METHOD] = self::OSS_HTTP_HEAD;
        $options[self::OSS_OBJECT] = '/';
        $response = $this->auth($options);
        $result = new HeaderResult($response);
        return $result->getData();
    }