public void notifySnapSyncCompleted() {
    final Duration duration = Duration.ofMillis(System.currentTimeMillis() - startSyncTime);
    LOG.info(
        "Finished worldstate snapsync with nodes {} (healed={}) duration {}{}:{},{}.",
        nbTrieNodesGenerated.addAndGet(nbTrieNodesHealed.get()),
        nbTrieNodesHealed,
        duration.toHoursPart() > 0 ? (duration.toHoursPart() + ":") : "",
        duration.toMinutesPart(),
        duration.toSecondsPart(),
        duration.toMillisPart());
  }
Represents the number of trie nodes healed during the healing process.
ethereum/eth/src/main/java/org/hyperledger/besu/ethereum/eth/sync/snapsync/SnapSyncMetricsManager.java