@Override
  public Bytes encode() {
    final BytesValueRLPOutput rlpOut = new BytesValueRLPOutput();
    rlpOut.startList();
    getSignedPayload().writeTo(rlpOut);
    if (proposedBlock.isPresent()) {
      proposedBlock.get().writeTo(rlpOut);
    } else {
      rlpOut.writeNull();
    }
    rlpOut.endList();
    return rlpOut.encoded();
  }
Gets prepared certificate round.

@return the prepared certificate round
consensus/ibft/src/main/java/org/hyperledger/besu/consensus/ibft/messagewrappers/RoundChange.java