code: private synchronized void updateBlockInfo(LogEntry e) {
      BlockScanInfo info = blockMap.get(new Block(e.blockId, 0, e.genStamp));
      
      if(info != null && e.verificationTime > 0 && 
          info.lastScanTime < e.verificationTime) {
        delBlockInfo(info);
        info.lastScanTime = e.verificationTime;
        info.lastScanType = ScanType.VERIFICATION_SCAN;
        addBlockInfo(info);
      }
    }
docs: Update blockMap by the given LogEntry