code: protected void outputLogSummary(int logId, ReadOnlyLogMetadata m) {
          if (m == null) {
              output("Log %d: No metadata.", logId);
          } else {
              output("Log %d: Epoch=%d, Version=%d, Enabled=%s, Ledgers=%d, Truncation={%s}", logId,
                      m.getEpoch(), m.getUpdateVersion(), m.isEnabled(), m.getLedgers().size(), m.getTruncationAddress());
          }
      }
docs: Outputs a summary for the given Log.
  
  @param logId The Log Id.
  @param m     The Log Metadata for the given Log Id.