//                                                                       =============
    @Override
    public String asTableDbName() {
        return "access_token";
    }

    @Override
    public String xgetAliasName() {
        return "access_token";
    }

    // ===================================================================================

    }

    private void upgradeFrom13_16() {
        // nothing
    }

    private void upgradeFrom13_17() {
        final String[] configIndices = { //
                "fess_config.access_token", //
                "fess_config.bad_word", //
                "fess_config.boost_document_rule", //
                "fess_config.crawling_info", //
                "fess_config.crawling_info_param", //