func (lo *largeObject) md5Content(r io.ReadSeeker) (string, string, error) {
	// #nosec G401
	h := md5.New()
	mw := io.MultiWriter(h, lo.md5)
	if _, err := io.Copy(mw, r); err != nil {
		return "", "", err
	}
	sum := h.Sum(nil)
	hexSum := fmt.Sprintf("%x", sum)
	// add to checksum of all parts for verification on upload completion
	if _, err := lo.md5OfParts.Write(sum); err != nil {
		return "", "", err
	}
	return base64.StdEncoding.EncodeToString(sum), hexSum, nil
}
func (lo *largeObject) md5Content(r io.ReadSeeker) (string, string, error) {
	// #nosec G401
	h := md5.New()
	mw := io.MultiWriter(h, lo.md5)
	if _, err := io.Copy(mw, r); err != nil {
		return "", "", err
	}
	sum := h.Sum(nil)
	hexSum := fmt.Sprintf("%x", sum)
	// add to checksum of all parts for verification on upload completion
	if _, err := lo.md5OfParts.Write(sum); err != nil {
		return "", "", err
	}
	return base64.StdEncoding.EncodeToString(sum), hexSum, nil
}
// Md5 functions