func getSignedProposal(prop *pb.Proposal, signer msp.SigningIdentity) (*pb.SignedProposal, error) {
propBytes, err := pbutils.GetBytesProposal(prop)
if err != nil {
return nil, err
}
signature, err := signer.Sign(propBytes)
if err != nil {
return nil, err
}
return &pb.SignedProposal{ProposalBytes: propBytes, Signature: signature}, nil
}
