asclass DynFlexibleRateTimer > DynModule {
  FlexibleRateTimer timer = new(1);
  transient SimpleLiveValue<S> lvRate;
  
  // call timer.setRunnableAndStart in subclass's start method!
  start {
    timer.onFrequencyChanged(r persistMe);
    lvRate = lvFlexibleRateTimerFreq(timer);
  }
  
  visualize {
    ret northAndCenterWithMargins(
      withLabelLeftAndRight("Rate:", jLiveValueTextField_bothWays(lvRate), "Hz"), mainPanel());
  }
  
  JComponent mainPanel() { ret dm_printLogComponent(); }

  void cleanMeUp_DynFlexibleRateTimer { cleanUp(timer); }
}