anchor.diff:  
   void main() {
     winrtInitialize();
  -  final japaneseCalendar = convertToHString('JapaneseCalendar');
  -  final hebrewCalendar = convertToHString('HebrewCalendar');
  -
     try {
       print('Windows Runtime demo. Calling Windows.Globalization.Calendar...\n');
       final comObject =
  
positive.code: 
      print('Languages: ${calendar.Languages}\n');
  
      calendar.ChangeCalendarSystem(japaneseCalendar);
      print(calendarData(calendar));
  
      calendar.ChangeCalendarSystem(hebrewCalendar);
      print(calendarData(calendar));
  
      final dateTime = calendar.GetDateTime();
  
negative.code:     free(comObject);
      free(clonedCalendar.ptr);
    } finally {
      winrtUninitialize();
    }
  }
  