code: public void log(Log log) {
      log.info("Counters: " + size());
      for(Group group: this) {
        log.info("  " + group.getDisplayName());
        for (Counter counter: group) {
          log.info("    " + counter.getDisplayName() + "=" + 
                   counter.getCounter());
        }   
      }
    }
docs: Logs the current counter values.
  @param log The log to use.