code: public static String patternForMoment(
          DisplayMode dateMode,
          DisplayMode timeMode,
          Locale locale
      ) {
  
          return FORMAT_PATTERN_PROVIDER.getDateTimePattern(dateMode, timeMode, locale);
  
      }
docs: /*[deutsch]
  <p>Liefert das lokalisierte Datums- und Uhrzeitmuster geeignet
  f&uuml;r die Formatierung von Instanzen des Typs {@code Moment}. </p>
  
  @param   dateMode    display mode of date part
  @param   timeMode    display mode of time part
  @param   locale      language and country setting
  @return  localized date-time pattern including timezone symbols
  @see     net.time4j.Moment
  @since   3.13/4.10