public static Map<String, String> readPhoneCountryCodes(final Locale plocale) {
    final PhoneCountryCodeConstants phoneCountryCodes = GWT.create(PhoneCountryCodeConstants.class);
    return phoneCountryCodes.phoneCountryCodes();
  }
public static Map < String , String > readPhoneCountryCodes ( final Locale plocale ) { final PhoneCountryCodeConstants phoneCountryCodes = GWT . create ( PhoneCountryCodeConstants . class ) ; return phoneCountryCodes . phoneCountryCodes ( ) ; }
read phone country codes and country iso codes.

@return map of phone country code and country iso code