return requestHeaderBhv.selectByPK(id);
    }

    /**
     * Stores a request header configuration to the database.
     * This method performs either insert or update based on whether the request header already exists.
     *
     * @param requestHeader the request header configuration to store
     */
    public void store(final RequestHeader requestHeader) {

{* ../../docs_src/security/tutorial002_an_py310.py hl[19:22,26:27] *}

## Впровадити поточного користувача { #inject-the-current-user }

Тепер ми можемо використати той самий `Depends` з нашим `get_current_user` в операції шляху:

{* ../../docs_src/security/tutorial002_an_py310.py hl[31] *}

        sb.append(dm).append(updatedBy);
        sb.append(dm).append(updatedTime);
        if (sb.length() > dm.length()) {
            sb.delete(0, dm.length());
        }
        sb.insert(0, "{").append("}");
        return sb.toString();
    }

    // ===================================================================================

- `@Execute` marks web endpoints
- `@Resource` for DI
- `@Secured({ "role", "role-view" })` for authorization
- Return `HtmlResponse` for JSP, `JsonResponse` for APIs

### 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()`

import eu.maveniverse.domtrip.Document;
import eu.maveniverse.domtrip.DomTripException;
import eu.maveniverse.domtrip.maven.MavenPomElements;
import org.apache.maven.api.cli.mvnup.UpgradeOptions;
import org.apache.maven.api.di.Inject;
import org.apache.maven.cling.invoker.mvnup.Goal;
import org.apache.maven.cling.invoker.mvnup.UpgradeContext;

import static eu.maveniverse.domtrip.maven.MavenPomElements.Files.MVN_DIRECTORY;

        sb.append(dm).append(startTime);
        sb.append(dm).append(target);
        if (sb.length() > dm.length()) {
            sb.delete(0, dm.length());
        }
        sb.insert(0, "{").append("}");
        return sb.toString();
    }

    // ===================================================================================

        ComponentUtil.register(languageHelper, "languageHelper");
        ComponentUtil.register(fessConfig, "fessConfig");
        ComponentUtil.register(ingestFactory, "ingestFactory");

        // Inject dependencies
        indexUpdater.searchEngineClient = searchEngineClient;
        indexUpdater.dataService = dataService;
        indexUpdater.urlQueueService = urlQueueService;

        thread.start();
        thread.join(2000);

        String output = thread.getOutput();
        String[] lines = output.split("\n");

        assertTrue("Buffer should respect max size", lines.length <= InputStreamThread.MAX_BUFFER_SIZE + 1);
    }

    @Test
    public void test_getOutput_emptyStream() throws InterruptedException {

    public String xgetLocationBase() {
        final StringBuilder sb = new StringBuilder();
        ConditionQuery query = this;
        while (true) {
            if (query.isBaseQuery()) {
                sb.insert(0, CQ_PROPERTY + ".");
                break;
            } else {
                final String foreignPropertyName = query.xgetForeignPropertyName();
                if (foreignPropertyName == null) {

    public String xgetLocationBase() {
        final StringBuilder sb = new StringBuilder();
        ConditionQuery query = this;
        while (true) {
            if (query.isBaseQuery()) {
                sb.insert(0, CQ_PROPERTY + ".");
                break;
            } else {
                final String foreignPropertyName = query.xgetForeignPropertyName();
                if (foreignPropertyName == null) {