assertTrue("Exception message should mention unregistered class: " + message,
                    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.

    bus.unregister(catcher1);
    bus.post(EVENT);

    assertEquals(
        "Shouldn't catch any more events when unregistered.", expectedEvents, catcher1.getEvents());
    assertEquals("Two correct events should be delivered.", expectedEvents, catcher2.getEvents());

    assertThrows(IllegalArgumentException.class, () -> bus.unregister(catcher1));

    bus.unregister(catcher2);

    bus.unregister(catcher1);
    bus.post(EVENT);

    assertEquals(
        "Shouldn't catch any more events when unregistered.", expectedEvents, catcher1.getEvents());
    assertEquals("Two correct events should be delivered.", expectedEvents, catcher2.getEvents());

    assertThrows(IllegalArgumentException.class, () -> bus.unregister(catcher1));

    bus.unregister(catcher2);

            return OptionalThing.empty();
        }
    }

    /**
     * Unregisters a scheduled job from the job manager.
     *
     * @param scheduledJob the scheduled job to unregister
     * @throws ScheduledJobException if the job cannot be unregistered
     */
    public void unregister(final ScheduledJob scheduledJob) {
        try {

        assertArgumentNotNull("disposable", disposable);
        disposables.addFirst(disposable);
    }

    /**
     * Unregisters a disposable resource.
     *
     * @param disposable
     *            A disposable resource. Must not be {@literal null}.
     */
    public static synchronized void remove(final Disposable disposable) {
        assertArgumentNotNull("disposable", disposable);

        is an alias for the latter) which could result in needing to regenerate
        selective op registration headers else execution would fail with
        unregistered kernels error.

*   Modular File System Migration:

    *   Support for S3 and HDFS file systems has been migrated to a modular file
        systems based approach and is now available in

    /**
     * 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");

 * 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. */

 */
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
    }

    /**