protected TokenizerFactory tokenizerFactory = null;

    public KatakanaConverter() {
        // nothing
    }

    public KatakanaConverter(final TokenizerFactory tokenizerFactory) {
        if (isEnableTokenizer(tokenizerFactory)) {
            this.tokenizerFactory = tokenizerFactory;
        }
    }

    @Override
    public void init() throws IOException {
        /*
         * TODO if (initialized) { return; }