code: public String getLocaleSeparator() {
          String sub0 = "{0}";
          String sub1 = "{1}";
          ICUResourceBundle locDispBundle = (ICUResourceBundle) langBundle.get(LOCALE_DISPLAY_PATTERN);
          String  localeSeparator = locDispBundle.getStringWithFallback(SEPARATOR);
          int index0 = localeSeparator.indexOf(sub0);
          int index1 = localeSeparator.indexOf(sub1);
          if (index0 >= 0 && index1 >= 0 && index0 <= index1) {
              return localeSeparator.substring(index0 + sub0.length(), index1);
          }
          return localeSeparator;
      }
docs: Returns LocaleDisplaySeparator for this locale.
  @return locale display separator as a char.