code: func GetProposalResponsePayload(prpBytes []byte) (*peer.ProposalResponsePayload, error) {
  	prp := &peer.ProposalResponsePayload{}
  	err := proto.Unmarshal(prpBytes, prp)
  	return prp, errors.Wrap(err, "error unmarshaling ProposalResponsePayload")
  }
docs: // GetProposalResponsePayload gets the proposal response payload