Tagging                 bool // Is only in GET/HEAD operations to return tagging metadata along with regular metadata and body.

	UserDefined         map[string]string   // only set in case of POST/PUT operations
	ObjectAttributes    map[string]struct{} // Attribute tags defined by the users for the GetObjectAttributes request

// header values specified in X-Amz-Metadata-Directive.
func getCpObjMetadataFromHeader(ctx context.Context, r *http.Request, userMeta map[string]string) (map[string]string, error) {
	// Make a copy of the supplied metadata to avoid
	// to change the original one.
	defaultMeta := make(map[string]string, len(userMeta))
	for k, v := range userMeta {
		// skip tier metadata when copying metadata from source object
		switch k {

	m, ok := isObjectDangling(metaArr, errs, dataErrsByPart)
	if !ok {
		// We only come here if we cannot figure out if the object
		// can be deleted safely, in such a scenario return ReadQuorum error.
		return FileInfo{}, errErasureReadQuorum
	}
	tags := make(map[string]string, 16)
	tags["set"] = strconv.Itoa(er.setIndex)

		}, index)
	}

	if err := reduceReadQuorumErrs(ctx, g.Wait(), objectOpIgnoredErrs, readQuorum); err != nil {
		return nil, err
	}

	partQuorumMap := make(map[int]int)
	for _, driveParts := range objectParts {
		partsWithMetaCount := make(map[int]int, len(driveParts))
		// part files can be either part.N or part.N.meta
		for _, partPath := range driveParts {
			var partNum int

	if sc := r.Header.Get(xhttp.AmzStorageClass); sc != "" {
		if !storageclass.IsValid(sc) {
			writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidStorageClass), r.URL)
			return
		}
	}

	encMetadata := map[string]string{}

	if crypto.Requested(r.Header) {
		if crypto.SSECopy.IsRequested(r.Header) {
			writeErrorResponse(ctx, w, toAPIError(ctx, errInvalidEncryptionParameters), r.URL)
			return
		}