final EntityCreator<T, SearchResponse, SearchHit> creator) {
        return search(index, searchRequestBuilder -> {
            searchRequestBuilder.setVersion(true);
            return condition.build(searchRequestBuilder);
        }, (queryBuilder, execTime, searchResponse) -> searchResponse.map(response -> {
            final SearchHit[] hits = response.getHits().getHits();

        return System.getenv();
    }

    /**
     * Gets the version of the Fess application.
     *
     * @return The version string.
     */
    public String getVersion() {
        return version;
    }

    /**
     * Gets the major version number.
     *
     * @return The major version number.
     */
    public int getMajorVersion() {