meta = newBucketMetadata(bucket)
		} else {
			return updatedAt, err
		}
	}
	updatedAt = UTCNow()
	switch configFile {
	case bucketPolicyConfig:
		meta.PolicyConfigJSON = configData
		meta.PolicyConfigUpdatedAt = updatedAt
	case bucketNotificationConfig:
		meta.NotificationConfigXML = configData
		meta.NotificationConfigUpdatedAt = updatedAt
	case bucketLifecycleConfig:
		meta.LifecycleConfigXML = configData

	}
}

// Return the last update of this bucket metadata, which
// means, the last update of any policy document.
func (b BucketMetadata) lastUpdate() (t time.Time) {
	if b.PolicyConfigUpdatedAt.After(t) {
		t = b.PolicyConfigUpdatedAt
	}
	if b.ObjectLockConfigUpdatedAt.After(t) {
		t = b.ObjectLockConfigUpdatedAt
	}
	if b.EncryptionConfigUpdatedAt.After(t) {
		t = b.EncryptionConfigUpdatedAt
	}

	if err != nil {
		return wrapSRErr(err)
	}

	if meta.Created.After(item.UpdatedAt) {
		return nil
	}

	if item.Policy != nil {
		meta.PolicyConfigJSON = item.Policy
		meta.PolicyConfigUpdatedAt = item.UpdatedAt
	}

	if item.Versioning != nil {
		configData, err := base64.StdEncoding.DecodeString(*item.Versioning)
		if err != nil {
			return wrapSRErr(err)
		}