code: public static CalendarPicker<PersianCalendar> persian(
          Locale locale,
          Supplier<PersianCalendar> todaySupplier
      ) {
  
          return CalendarPicker.create(
              PersianCalendar.axis(),
              new FXCalendarSystemPersian(),
              locale,
              todaySupplier
          );
  
      }
docs: /*[deutsch]
  <p>Erzeugt einen neuen {@code CalendarPicker} f&uuml;r das persische Kalendersystem (jalali). </p>
  
  @param   locale          the language and country configuration
  @param   todaySupplier   determines the current calendar date
  @return  CalendarPicker