val := r.Trailer.Get(t.Key())
		if val != "" {
			w.Header().Set(t.Key(), val)
		}
		return
	}
	w.Header().Set(t.Key(), s)
}

// AddChecksumHeader will transfer any checksum value that has been checked.
func AddChecksumHeader(w http.ResponseWriter, c map[string]string) {
	for k, v := range c {
		cksum := NewChecksumString(k, v)
		if cksum == nil {
			continue
		}
		if cksum.Valid() {

	}

	if objInfo.Bucket != "" && objInfo.Name != "" {
		if lc, err := globalLifecycleSys.Get(objInfo.Bucket); err == nil && !delete {
			lc.SetPredictionHeaders(w, objInfo.ToLifecycleOpts())
		}
	}
	hash.AddChecksumHeader(w, objInfo.decryptChecksums(0, h))
}

func deleteObjectVersions(ctx context.Context, o ObjectLayer, bucket string, toDel []ObjectToDelete, lcEvent lifecycle.Event) {

		redirectURL.RawQuery = v.Encode()
		writeRedirectSeeOther(w, redirectURL.String())
		return
	}

	// Add checksum header.
	if checksum != nil && checksum.Valid() {
		hash.AddChecksumHeader(w, checksum.AsMap())
	}

	// Decide what http response to send depending on success_action_status parameter
	switch successStatus {
	case "201":
		resp := encodeResponse(PostResponse{

		}
		objInfo.ETag = getDecryptedETag(r.Header, objInfo, false)
	}

	if r.Header.Get(xhttp.AmzChecksumMode) == "ENABLED" && rs == nil {
		// AWS S3 silently drops checksums on range requests.
		hash.AddChecksumHeader(w, objInfo.decryptChecksums(opts.PartNumber, r.Header))
	}

	if err = setObjectHeaders(ctx, w, objInfo, rs, opts); err != nil {
		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
		return
	}