code: private Calendar getAccessWindowEnd() {
  
          // Get window end time
          Time end = getModel().getAccessWindowEnd();
          if (end == null)
              return null;
  
          // Return within defined time zone, current day
          return asCalendar(Calendar.getInstance(getTimeZone()), end);
  
      }
docs: Returns the time during the current day when this user account can no
  longer be used.
  
  @return
  The time during the current day when this user account can no longer
  be used.