public void writeTo(final RLPOutput out) {
    out.writeIntScalar(preparedRound);
    out.writeBytes(preparedBlockHash);
  }
Adds this rounds information to a given RLP buffer

@param out The RLP buffer to add to
consensus/qbft-core/src/main/java/org/hyperledger/besu/consensus/qbft/core/payload/PreparedRoundMetadata.java