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