}

            @Override
            public String getQueryAdditionalDefaultFields() {
                return "";
            }

            @Override
            public String getQueryAdditionalSearchFields() {
                return "";
            }

            @Override
            public String getQueryAdditionalFacetFields() {
                return "";
            }

            }

            @Override
            public String getQueryAdditionalDefaultFields() {
                return "";
            }

            @Override
            public String getQueryAdditionalSearchFields() {
                return "";
            }

            @Override
            public String getQueryLanguageMapping() {
                return "en:en,ja:ja";
            }

                return baseConfig.getQueryAdditionalDefaultFields();
            }

            @Override
            public String getQueryAdditionalSearchFields() {
                return baseConfig.getQueryAdditionalSearchFields();
            }

            @Override
            public String getQueryAdditionalSortFields() {
                return baseConfig.getQueryAdditionalSortFields();

                    fessConfig.getIndexFieldContent());
        }
        if (searchFields == null) {
            searchFields = fessConfig.getQueryAdditionalSearchFields(//
                    INURL_FIELD, //
                    fessConfig.getIndexFieldUrl(), //
                    fessConfig.getIndexFieldDocId(), //
                    fessConfig.getIndexFieldHost(), //