final Map<String, AnalysisProvider<TokenFilterFactory>> extra = new HashMap<>();
        extra.put("reloadable_kuromoji_baseform", KuromojiBaseFormFilterFactory::new);
        extra.put("reloadable_kuromoji_part_of_speech", KuromojiPartOfSpeechFilterFactory::new);
        extra.put("reloadable_kuromoji_readingform", KuromojiReadingFormFilterFactory::new);
        extra.put("reloadable_kuromoji_stemmer", KuromojiKatakanaStemmerFactory::new);