code: func SignDetachedArmor62(version Version, plaintext []byte, signer SigningSecretKey, brand string) (string, error) {
  	buf, err := signToStream(version, plaintext, signer, applyBrand(NewSignDetachedArmor62Stream, brand))
  	if err != nil {
  		return "", err
  	}
  	return buf.String(), nil
  }
docs: // SignDetachedArmor62 returns a detached armored signature of plaintext from signer.