code: public void reset() {
      lastReset = new Date();
  
      if (counters != null) {
        synchronized (counters) {
          counters.clear();
        }
      }
  
      if (chronos != null) {
        synchronized (chronos) {
          chronos.clear();
        }
      }
  
      if (stats != null) {
        synchronized (stats) {
          stats.clear();
        }
      }
    }
docs: /*
  (non-Javadoc)
  
  @see com.orientechnologies.common.profiler.ProfileMBean#reset()