public static void removeLanguage(Language language) {
languageList.remove(language);
languageById.remove(language.getLanguageId());
languageByCode.remove(language.getCode());
}
public static void addLanguage(Language language) {
languageList.add(language);
languageById.put(language.getLanguageId(), language);
languageByCode.put(language.getCode(), language);
}