public function putBucketStorageCapacity($bucket, $storageCapacity, $options = NULL)
    {
        $this->precheckCommon($bucket, NULL, $options, false);
        $options[self::OSS_BUCKET] = $bucket;
        $options[self::OSS_METHOD] = self::OSS_HTTP_PUT;
        $options[self::OSS_OBJECT] = '/';
        $options[self::OSS_SUB_RESOURCE] = 'qos';
        $options[self::OSS_CONTENT_TYPE] = 'application/xml';
        $storageCapacityConfig = new StorageCapacityConfig($storageCapacity);
        $options[self::OSS_CONTENT] = $storageCapacityConfig->serializeToXml();
        $response = $this->auth($options);
        $result = new PutSetDeleteResult($response);
        return $result->getData();
    }