private final String[] fixedIds;

        TestSearcherWithFixedIds(String... ids) {
            this.fixedIds = ids;
        }

        @Override
        protected SearchResult search(String query, SearchRequestParams params, OptionalThing<FessUserBean> userBean) {
            SearchResultBuilder builder = SearchResult.create();
            for (int i = 0; i < fixedIds.length; i++) {