String getDomainTitle();

    /**
     * Get the value for the key 'search_engine.type'. <br>
     * The value is, e.g. default <br>
     * comment: The type of search engine backend (e.g., default, opensearch).
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getSearchEngineType();

    /**

import org.codelibs.fess.app.web.CrudMode;
import org.codelibs.fess.app.web.base.FessAdminAction;
import org.codelibs.fess.helper.ProcessHelper;
import org.codelibs.fess.helper.SystemHelper;
import org.codelibs.fess.opensearch.config.exentity.ScheduledJob;
import org.codelibs.fess.util.ComponentUtil;
import org.codelibs.fess.util.RenderDataUtil;
import org.dbflute.optional.OptionalEntity;
import org.dbflute.optional.OptionalThing;

import java.util.jar.JarOutputStream;

import org.codelibs.fess.ds.callback.IndexUpdateCallback;
import org.codelibs.fess.entity.DataStoreParams;
import org.codelibs.fess.helper.SystemHelper;
import org.codelibs.fess.opensearch.config.exentity.DataConfig;
import org.codelibs.fess.unit.UnitFessTestCase;
import org.codelibs.fess.util.ComponentUtil;
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Test;

labels.target_version=Zielversion
labels.sereq_configuration=Anfrage an OpenSearch
labels.sereq_request_file=Anforderungsdatei
labels.requestFile=Anforderungsdatei
labels.sereq_button_upload=Senden
labels.facet_is_not_found=Nicht gefunden
labels.doc_score=Punktzahl:
labels.development_mode_warning=Fess wird im Entwicklungsmodus ausgeführt. Bitte installieren Sie OpenSearch in einer Produktionsumgebung separat.

labels.target_version=Versi Target
labels.sereq_configuration=Permintaan ke OpenSearch
labels.sereq_request_file=Berkas Permintaan
labels.requestFile=Berkas Permintaan
labels.sereq_button_upload=Kirim
labels.facet_is_not_found=Tidak ditemukan
labels.doc_score=Skor:
labels.development_mode_warning=Fess berjalan dalam mode pengembangan. Silakan instal OpenSearch secara terpisah di lingkungan produksi.

labels.target_version=Wersja docelowa
labels.sereq_configuration=Żądanie do OpenSearch
labels.sereq_request_file=Plik żądania
labels.requestFile=Plik żądania
labels.sereq_button_upload=Wyślij
labels.facet_is_not_found=Nie znaleziono
labels.doc_score=Wynik:
labels.development_mode_warning=Działa w trybie deweloperskim. Zainstaluj OpenSearch oddzielnie w środowisku produkcyjnym.

import org.codelibs.fess.helper.SystemHelper;
import org.codelibs.fess.mylasta.direction.FessConfig;
import org.codelibs.fess.opensearch.user.exentity.Group;
import org.codelibs.fess.opensearch.user.exentity.Role;
import org.codelibs.fess.opensearch.user.exentity.User;
import org.codelibs.fess.util.ComponentUtil;
import org.codelibs.fess.util.OptionalUtil;
import org.dbflute.optional.OptionalEntity;

import org.codelibs.fess.helper.SystemHelper;
import org.codelibs.fess.mylasta.direction.FessConfig;
import org.codelibs.fess.opensearch.config.exentity.CrawlingConfig.ConfigName;
import org.codelibs.fess.opensearch.config.exentity.CrawlingConfig.Param.Config;
import org.codelibs.fess.opensearch.config.exentity.WebConfig;
import org.codelibs.fess.unit.UnitFessTestCase;
import org.codelibs.fess.util.ComponentUtil;

labels.reindex_start_button=開始
labels.targetVersion=目標版本
labels.target_version=目標版本
labels.sereq_configuration=對OpenSearch的請求
labels.sereq_request_file=請求檔案
labels.requestFile=請求檔案
labels.sereq_button_upload=發送
labels.facet_is_not_found=未找到
labels.doc_score=分數:
labels.development_mode_warning=正在開發模式下運行。請在生產環境中單獨安裝OpenSearch。
labels.eol_error=您的系統已停止支援。請參閱產品支援生命週期頁面進行升級。
labels.tooltip_search_view=搜尋視圖

import org.lastaflute.web.LastaWebKey;
import org.lastaflute.web.util.LaRequestUtil;
import org.lastaflute.web.util.LaResponseUtil;
import org.lastaflute.web.util.LaServletContextUtil;
import org.opensearch.common.joda.Joda;

import com.google.common.cache.CacheBuilder;
import com.google.common.cache.CacheLoader;
import com.google.common.cache.LoadingCache;

import jakarta.servlet.http.HttpServletRequest;

/**