private MessageAge determineAgeOfPayload(final int messageRoundNumber) {
    final int currentRoundNumber = currentRound.getRoundIdentifier().getRoundNumber();
    if (messageRoundNumber > currentRoundNumber) {
      return FUTURE_ROUND;
    } else if (messageRoundNumber == currentRoundNumber) {
      return CURRENT_ROUND;
    }
    return PRIOR_ROUND;
  }
If the list of validators for the next block to be proposed/imported has changed from the
previous block, log the change. Only log for round 0 (i.e. once per block).

@param ibftRound The current round
consensus/ibft/src/main/java/org/hyperledger/besu/consensus/ibft/statemachine/IbftBlockHeightManager.java