code: public void start() // F73234
      {
          final boolean isTraceOn = TraceComponent.isAnyTracingEnabled();
          if (isTraceOn && tc.isEntryEnabled())
              Tr.entry(tc, "start");
  
          ivScheduledFuture = ivDeferrableScheduledExecutorService.schedule(this,
                                                                            ivSweepInterval,
                                                                            TimeUnit.MILLISECONDS); // F73234
  
          if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
              Tr.exit(tc, "start");
      }
docs: Schedules the alarm using ScheduledExecutorService that will periodically sweep the associated {@link Cache}.