func extractMetadataFromReq(ctx context.Context, r *http.Request) (metadata map[string]string, err error) {
	return extractMetadata(ctx, textproto.MIMEHeader(r.Form), textproto.MIMEHeader(r.Header))
}

func extractMetadata(ctx context.Context, mimesHeader ...textproto.MIMEHeader) (metadata map[string]string, err error) {
	metadata = make(map[string]string)

	for _, hdr := range mimesHeader {

				if k == "minio.versionId" {
					continue
				}
				if after, ok0 := strings.CutPrefix(k, "minio.metadata."); ok0 {
					k = after
					hdrs.Set(k, v)
				}
			}
			m, err := extractMetadata(ctx, textproto.MIMEHeader(hdrs))
			if err != nil {
				return err
			}
			maps.Copy(metadata, m)
		} else {
			versionID = r.Form.Get(xhttp.VersionID)
			hdrs = r.Header
		}