code: public static String getDisplayNameWithDialect(String localeID, String displayLocaleID) {
          return getDisplayNameWithDialectInternal(new ULocale(localeID),
                  new ULocale(displayLocaleID));
      }
docs: <strong>[icu]</strong> Returns the locale ID localized for display in the provided locale.
  If a dialect name is present in the locale data, then it is returned.
  This is a cover for the ICU4C API.
  @param localeID the locale whose name is to be displayed.
  @param displayLocaleID the id of the locale in which to display the locale name.
  @return the localized locale name.