/**
     * The filter chain that processes queries through all registered filters
     * before executing the appropriate query command.
     */
    protected FilterChain filterChain;

    /**
     * Initializes the query processor after construction.
     * This method creates the initial filter chain from the registered filters.
     * Called automatically by the DI container after bean construction.
     */

        RenderDataUtil.register(data, "empty", emptyList);

        Object result = data.getDataMap().get("empty");
        assertEquals(emptyList, result); // Empty collections are registered as-is
    }

    @Test
    public void test_register_nonEntityList() {
        RenderData data = new RenderData();
        List<String> stringList = Arrays.asList("item1", "item2", "item3");

                    message != null && (message.contains("not registered") || message.contains("Class is not registered")
                            || message.contains("unregistered")));
        }
    }

    /**
     * Test that all registered types work correctly.
     * This ensures our registration covers the common use cases.
     */
    @Test

 * </p>
 *
 * @author koichik
 */
public abstract class DisposableUtil {

    /**
     * Do not instantiate.
     */
    protected DisposableUtil() {
    }

    /** Registered {@link Disposable} */
    protected static final Deque<Disposable> disposables = newLinkedList();

    /**
     * Registers a disposable resource.
     *
     * @param disposable

 */
public class IngestFactory {
    /** Logger instance for this class */
    private static final Logger logger = LogManager.getLogger(IngestFactory.class);

    /** Array of registered ingesters, sorted by priority */
    private Ingester[] ingesters = {};

    /**
     * Default constructor.
     */
    public IngestFactory() {
        // Default constructor
    }

    /**

 * It manages registered SSO authenticators, determines when SSO is available,
 * and delegates authentication operations to the appropriate SSO provider based
 * on the current configuration.
 */
public class SsoManager {
    /** Logger for this class. */
    private static final Logger logger = LogManager.getLogger(SsoManager.class);

    /** List of registered SSO authenticators. */

 * This factory maintains a registry of data store implementations and provides methods
 * to register, retrieve, and discover available data stores.
 *
 * <p>Data stores are registered by name and class name, allowing flexible lookup.
 * The factory also supports dynamic discovery of data store plugins by scanning
 * JAR files for data store configurations.</p>
 *

        testScriptEngine.register();

        // Verify that the engine was registered with the factory
        ScriptEngine retrievedEngine = scriptEngineFactory.getScriptEngine("testEngine");
        assertNotNull(retrievedEngine);
        assertEquals(testScriptEngine, retrievedEngine);

        // Verify that the engine was also registered with its class name

<components>
	<include path="fess_config.xml"/>

	<component name="webApiManagerFactory" class="org.codelibs.fess.api.WebApiManagerFactory">
	</component>

	<!-- ChatApiManager must be registered before SearchApiManager -->
	<!-- because SearchApiManager matches /api/v1/* which would intercept /api/v1/chat/* -->
	<component name="chatApiManager" class="org.codelibs.fess.api.chat.ChatApiManager">
	</component>

As part of the application object creation, a *path operation* for `/openapi.json` (or for whatever you set your `openapi_url`) is registered.

It just returns a JSON response with the result of the application's `.openapi()` method.

By default, what the method `.openapi()` does is check the property `.openapi_schema` to see if it has contents and return them.