public static PreparedRoundMetadata readFrom(final RLPInput in) {
    final int preparedRound = in.readIntScalar();
    final Hash preparedBlockHash = Hash.wrap(in.readBytes32());
    return new PreparedRoundMetadata(preparedBlockHash, preparedRound);
  }
Constructor that derives the sequence and round information from an RLP encoded message

@param in The RLP body of the message to check
@return A PreparedRoundMetadata as extracted from the supplied RLP input
consensus/qbft-core/src/main/java/org/hyperledger/besu/consensus/qbft/core/payload/PreparedRoundMetadata.java