docs: public void alarm(Object thandle)
    {
      if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
        SibTr.entry(tc, "alarm", thandle);
  
      parent.expiryAlarm(this);
  
      if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
        SibTr.exit(tc, "alarm");
    }