public void initRange(final Map<Bytes32, Bytes32> ranges) {
    for (Map.Entry<Bytes32, Bytes32> entry : ranges.entrySet()) {
      this.lastRangeIndex.put(entry.getValue(), entry.getKey().toUnsignedBigInteger());
    }
    this.startSyncTime = System.currentTimeMillis();
    this.lastNotifyTimestamp = startSyncTime;
  }
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