code: public static PrettyTime of(Locale locale) {
  
          PrettyTime ptime = LANGUAGE_MAP.get(locale);
  
          if (ptime == null) {
              ptime =
                  new PrettyTime(
                      locale,
                      SystemClock.INSTANCE,
                      NUMBER_SYMBOLS.getZeroDigit(locale),
                      NUMBER_SYMBOLS.getMinusSign(locale),
                      SECONDS,
                      false,
                      false,
                      null,
                      null);
              PrettyTime old = LANGUAGE_MAP.putIfAbsent(locale, ptime);
  
              if (old != null) {
                  ptime = old;
              }
          }
  
          return ptime;
  
      }
docs: /*[deutsch]
  <p>Liefert eine Instanz von {@code PrettyTime} f&uuml;r die angegebene
  Sprache, eventuell aus dem Cache. </p>
  
  @param   locale    the language an instance is searched for
  @return  pretty time object for formatting durations or relative time
  @since   1.2