// ===================================================================================
    //                                                                       Elasticsearch
    //                                                                              ======
    public RefreshResponse refresh() {

Fess is based on [OpenSearch](https://github.com/opensearch-project/OpenSearch)/[Elasticsearch](https://github.com/elastic/elasticsearch), but knowledge/experience about OpenSearch/Elasticsearch is _not_ required. Fess provides an easy to use Administration GUI to configure the system via your browser.

		</antcall>
		<!-- kopf -->
		<get dest="${target.dir}/kopf.zip">
			<url url="https://github.com/codelibs/elasticsearch-kopf/archive/${kopf.branch}.zip" />
		</get>
		<delete dir="${site.dir}/kopf" />
		<unzip dest="${site.dir}/kopf" src="${target.dir}/kopf.zip">
			<patternset>
				<include name="elasticsearch-kopf-${kopf.branch}/_site/**" />
			</patternset>
			<cutdirsmapper dirs="2" />
		</unzip>

							</paths>
							<mapper>
								<type>perm</type>
								<user>opensearch</user>
								<group>opensearch</group>
							</mapper>
						</data>
						<!-- Add elasicsearch modules directory -->
						<data>
							<type>directory</type>
							<src>${project.basedir}/modules</src>
							<mapper>
								<type>perm</type>

    // ===================================================================================
    //                                                                       Elasticsearch
    //                                                                              ======
    public RefreshResponse refresh() {

            return value;
        }
        return get("elasticsearch.type");
    }

    String getSearchEngineHttpUrl();

    default String getFesenHttpUrl() {
        final String value = getSearchEngineHttpUrl();
        if (value != null) {
            return value;
        }
        return get("elasticsearch.http.url");
    }

    // ===================================================================================
    //                                                                       Elasticsearch
    //                                                                              ======
    public RefreshResponse refresh() {