docs: public void enableFileSwitch(int switchHour) {
  
  		if(fileSwitchTimer == null){
  			fileSwitchTimer = AccessHelper.createTimer();
  		}
  
          //set calendar instance to the specified configuration hour for cutting
  		//default to midnight when the passed in value is invalid, or midnight is specified (to avoid negative value when 1 is subtracted
  		if(switchHour < MIN_SWITCH_HOUR || switchHour > MAX_SWITCH_HOUR ){
  			// It's OK to use logger here since adding logging record will not result in changing
  			// file switching configuration.
  			logger.logp(Level.WARNING, className, "enableFileSwitch", "HPEL_IncorrectSwitchHour", new Object[]{switchHour,MIN_SWITCH_HOUR, MAX_SWITCH_HOUR,MIN_SWITCH_HOUR});
  			switchHour = MIN_SWITCH_HOUR;
  		}
  
  
  		//Note:  We will set the file cutting time to match the exact hour that was specified, but it's possible for the timestamp attribute of the file
  		//to go beyond the switchTime, as the final writes to close the file will alter the timestamp attribute.
  		//For example, if a fileSwitch was set to midnight, log records that are written after midnight will go to a new file, but it's possible for the
  		//previous file being closed to have a midnight timestamp attribute.
  		Calendar currentTime = Calendar.getInstance();
  		Calendar switchTime = currentTime;
  		switchTime.set(Calendar.HOUR_OF_DAY, switchHour);
  		switchTime.set(Calendar.MINUTE, 00);
  		switchTime.set(Calendar.SECOND, 00);
  
  		//if the time has already passed, then set to the next day.  Otherwise
  		//the timer will catch up on the missed tasks that would've been executed.
  		//For example:  If the switchTime was set to 11 (for 11AM), and the server gets started after 11AM, we do not want the file switch
  		//to occur until 11AM of the following day.
  		if(currentTime.after(switchTime)){
  			switchTime.add(Calendar.DATE, 1);
  		}
  
  		fileSwitchTime.setTime(switchTime.getTimeInMillis());
  		fileSwitchTimer.scheduleAtFixedRate(fileSwitchTask, fileSwitchTime, SWITCH_PERIOD);
  	}