Replace Locale#adjustLanguageCode with its own implementation

            remainder = languageTag.substring(separator);

        }

        return Locale.adjustLanguageCode(language) + remainder;

        // No need to convert to lower cases because the language in the return value of

        // Locale.toLanguageTag has been lower-cased.

        final String adjustedLanguage;

        switch(language) {

            case "id":

                adjustedLanguage = "in";

                break;

            case "yi":

                adjustedLanguage = "ji";

                break;

            case "he":

                adjustedLanguage = "iw";

                break;

            default:

                adjustedLanguage = language;

                break;

        }

        return adjustedLanguage + remainder;

    }

    /**