if (value != null) {
            int unknownKey = 0;
            final Pattern properyPattern = Pattern.compile(ComponentUtil.getFessConfig().getAppEncryptPropertyPattern());
            final PrimaryCipher cipher = ComponentUtil.getPrimaryCipher();
            final String[] lines = value.split("[\r\n]");
            for (final String line : lines) {
                if (StringUtil.isNotBlank(line)) {

        });
        final ProtocolHelper protocolHelper = new ProtocolHelper();
        protocolHelper.init();
        ComponentUtil.register(protocolHelper, "protocolHelper");

        goAction = new TestableGoAction();
    }

    @Override
    protected void tearDown(TestInfo testInfo) throws Exception {
        ComponentUtil.setFessConfig(null);
        super.tearDown(testInfo);
    }

import org.codelibs.fess.helper.SystemHelper;
import org.codelibs.fess.mylasta.direction.FessConfig;
import org.codelibs.fess.opensearch.config.exbhv.JobLogBhv;
import org.codelibs.fess.util.ComponentUtil;
import org.dbflute.optional.OptionalThing;
import org.lastaflute.core.time.TimeManager;
import org.lastaflute.job.LaCron;
import org.lastaflute.job.LaJob;
import org.lastaflute.job.LaJobRunner;

### Service
- Inject behaviors (Bhv) for data access
- Use `OptionalEntity<T>` for nullable returns
- Plain classes (no extends/implements)

### Helper
- Stateless utility classes
- Access via `ComponentUtil.getXyzHelper()`
- Named with "Helper" suffix

### DBFlute Generated Code
```
opensearch/{index}/
├── bsentity/, bsbhv/    # Base classes (DO NOT EDIT)

 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.app.pager;

import java.io.Serializable;
import java.util.List;

import org.codelibs.fess.util.ComponentUtil;

/**
 * Pager class for request header management in the Fess search engine.
 * This class provides pagination functionality for displaying and managing
 * request headers in the administration interface.
 */

import org.codelibs.fess.entity.ChatSession;
import org.codelibs.fess.llm.LlmMessage;
import org.codelibs.fess.mylasta.direction.FessConfig;
import org.codelibs.fess.unit.UnitFessTestCase;
import org.codelibs.fess.util.ComponentUtil;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.TestInfo;

/**
 * Tests for ChatClient's extractHistory and buildAssistantHistoryContent methods.

import org.codelibs.fess.Constants;
import org.codelibs.fess.entity.QueryContext;
import org.codelibs.fess.exception.InvalidQueryException;
import org.codelibs.fess.mylasta.direction.FessConfig;
import org.codelibs.fess.util.ComponentUtil;
import org.lastaflute.core.message.UserMessages;
import org.opensearch.index.query.QueryBuilder;

/**
 * Query command for phrase queries.
 */
public class PhraseQueryCommand extends QueryCommand {

import org.codelibs.core.lang.StringUtil;
import org.codelibs.fess.entity.FessUser;
import org.codelibs.fess.helper.SystemHelper;
import org.codelibs.fess.mylasta.direction.FessConfig;
import org.codelibs.fess.util.ComponentUtil;
import org.codelibs.saml2.Auth;
import org.lastaflute.web.login.credential.LoginCredential;

/**
 * Credential for SAML authentication.
 */
public class SamlCredential implements LoginCredential, FessCredential {

import org.codelibs.fess.app.web.base.login.LocalUserCredential;
import org.codelibs.fess.app.web.login.LoginAction;
import org.codelibs.fess.mylasta.action.FessMessages;
import org.codelibs.fess.util.ComponentUtil;
import org.lastaflute.web.Execute;
import org.lastaflute.web.response.HtmlResponse;
import org.lastaflute.web.validation.VaErrorHook;

import jakarta.annotation.Resource;

/**

import java.util.concurrent.atomic.AtomicInteger;

import org.codelibs.core.timer.TimeoutManager;
import org.codelibs.core.timer.TimeoutTask;
import org.codelibs.fess.timer.LogNotificationTarget;
import org.codelibs.fess.util.ComponentUtil;

import jakarta.annotation.PostConstruct;
import jakarta.annotation.PreDestroy;

/**
 * Helper that manages the lifecycle of the log notification timer and