code: private static DateFormat loadNumericDurationFormat(
              ICUResourceBundle r, String type) {
          r = r.getWithFallback(String.format("durationUnits/%s", type));
          // We replace 'h' with 'H' because 'h' does not make sense in the context of durations.
          DateFormat result = new SimpleDateFormat(r.getString().replace("h", "H"));
          result.setTimeZone(TimeZone.GMT_ZONE);
          return result;
      }
docs: type is one of "hm", "ms" or "hms"