@Override
  public void handleCommitPayload(final Commit commit) {
    LOG.trace("Received a Commit Payload.");
    actionOrBufferMessage(commit, currentRound::handleCommitMessage, RoundState::addCommitMessage);
  }
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