*/
    public enum WitnessRegistrationState {
        /** Registration is in progress */
        REGISTERING,
        /** Registration is active and confirmed */
        REGISTERED,
        /** Unregistration is in progress */
        UNREGISTERING,
        /** Registration has failed */
        FAILED,
        /** Registration has expired due to timeout */
        EXPIRED
    }

        assertEquals(WitnessRegistrationState.REGISTERING, registration.getState());

        registration.setState(WitnessRegistrationState.REGISTERED);
        assertEquals(WitnessRegistrationState.REGISTERED, registration.getState());

        registration.setState(WitnessRegistrationState.UNREGISTERING);
        assertEquals(WitnessRegistrationState.UNREGISTERING, registration.getState());

        // Verify all expected states are present
        assertNotNull(WitnessRegistration.WitnessRegistrationState.REGISTERING);
        assertNotNull(WitnessRegistration.WitnessRegistrationState.REGISTERED);
        assertNotNull(WitnessRegistration.WitnessRegistrationState.UNREGISTERING);
        assertNotNull(WitnessRegistration.WitnessRegistrationState.FAILED);

import static com.google.common.base.Preconditions.checkNotNull;

import com.google.common.base.MoreObjects;

/**
 * Wraps an event that was posted, but which had no subscribers and thus could not be delivered.
 *
 * <p>Registering a DeadEvent subscriber is useful for debugging or logging, as it can detect
 * misconfigurations in a system's event distribution.
 *
 * @author Cliff Biffle
 * @since 10.0
 */
public class DeadEvent {

            key8[i] ^= Integer.bitCount(key8[i] ^ 1) & 1;
        }
        return key8;
    }

    /**
     * Default provider is BouncyCastleProvider.
     * For registering custom provider
     * @see jcifs.util.Crypto#initProvider(Provider)
     * @return Provider
     */
    public static Provider getProvider() {
        if (provider != null) {
            return provider;

   * blocks, it can prevent this service from changing state. If you need to performing a blocking
   * operation in order to trigger shutdown, consider instead registering a listener and
   * implementing {@code stopping}. Note, however, that {@code stopping} does not run at exactly the
   * same times as {@code triggerShutdown}.
   */
  protected void triggerShutdown() {}

  /**

 *
 * <p>
 * This class handles the retrieval of essential crawler components like
 * {@link MimeTypeHelper} and {@link ExtractorFactory} from the
 * {@link CrawlerContainer}. It also provides a convenient method for
 * registering the extractor with the {@link ExtractorFactory}.
 * </p>
 *
 * <p>
 * Subclasses should implement the actual extraction logic in their own
 * methods, leveraging the helper methods provided by this abstract class.

   * blocks, it can prevent this service from changing state. If you need to performing a blocking
   * operation in order to trigger shutdown, consider instead registering a listener and
   * implementing {@code stopping}. Note, however, that {@code stopping} does not run at exactly the
   * same times as {@code triggerShutdown}.
   */
  protected void triggerShutdown() {}

  /**

Connection: keep-alive
```

We can see that we were redirected because `response.request().url()` is different from `request.url()`. The two log statements log two different URLs.

### Network Interceptors

Registering a network interceptor is quite similar. Call `addNetworkInterceptor()` instead of `addInterceptor()`:

```java
OkHttpClient client = new OkHttpClient.Builder()
    .addNetworkInterceptor(new LoggingInterceptor())

            return;
        }

        final JobHelper jobHelper = ComponentUtil.getJobHelper();
        if (!jobHelper.isAvailable(id)) {
            logger.info("Job is unavailable, unregistering: id={}", id);
            jobHelper.unregister(scheduledJob);
            return;
        }

        final JobLog jobLog = new JobLog(scheduledJob);
        final String scriptType = scheduledJob.getScriptType();