```
notify_webhook        publish bucket notifications to webhook endpoints
notify_amqp           publish bucket notifications to AMQP endpoints
notify_kafka          publish bucket notifications to Kafka endpoints
notify_mqtt           publish bucket notifications to MQTT endpoints
notify_nats           publish bucket notifications to NATS endpoints

public final class RemovalListeners {

  private RemovalListeners() {}

  /**
   * Returns a {@code RemovalListener} which processes all eviction notifications using {@code
   * executor}.
   *
   * @param listener the backing listener
   * @param executor the executor with which removal notifications are asynchronously executed
   */
  public static <K, V> RemovalListener<K, V> asynchronous(

notify_webhook        publish bucket notifications to webhook endpoints
notify_amqp           publish bucket notifications to AMQP endpoints
notify_kafka          publish bucket notifications to Kafka endpoints
notify_mqtt           publish bucket notifications to MQTT endpoints
notify_nats           publish bucket notifications to NATS endpoints
notify_nsq            publish bucket notifications to NSQ endpoints

    if (element == null || !isActuallyE(element)) {
      return 0;
    }
    Enum<?> e = (Enum<?>) element;
    return counts[e.ordinal()];
  }

  // Modification Operations
  @CanIgnoreReturnValue
  @Override
  public int add(E element, int occurrences) {
    checkIsE(element);
    checkNonnegative(occurrences, "occurrences");
    if (occurrences == 0) {

                }

            } catch (Exception e) {
                log.error("Failed to register for witness notifications", e);
                throw new RuntimeException(e);
            }
        });
    }

    /**
     * Unregisters from witness notifications.
     *
     * @param registration the registration to remove
     * @return a future that completes when unregistration is done

            client.deleteByQuery(indexName, QueryBuilders.termQuery("hostname", hostname));
        } catch (final Exception e) {
            logger.debug("Failed to delete remaining log notifications.", e);
        }

        return "Sent log notifications: " + events.size() + " events.";
    }

    /**
     * Formats a list of log notification events into a human-readable summary string.
     *

    private final long lastWriteTime;

    /**
     * Constructs a set information request to modify file attributes and modification time.
     *
     * @param config the configuration to use
     * @param filename the name of the file to modify
     * @param attrs the file attributes to set
     * @param mtime the modification time to set in milliseconds since epoch
     */

            processNotificationBatch(batch);
        }
    }
    
    private void processNotificationBatch(List<WitnessNotification> notifications) {
        // Process multiple notifications together for efficiency
        for (WitnessNotification notification : notifications) {
            // Handle notification
        }
    }
}
```

## 10. Security Considerations

    if (element == null || !isActuallyE(element)) {
      return 0;
    }
    Enum<?> e = (Enum<?>) element;
    return counts[e.ordinal()];
  }

  // Modification Operations
  @CanIgnoreReturnValue
  @Override
  public int add(E element, int occurrences) {
    checkIsE(element);
    checkNonnegative(occurrences, "occurrences");
    if (occurrences == 0) {

public final class RemovalListeners {

  private RemovalListeners() {}

  /**
   * Returns a {@code RemovalListener} which processes all eviction notifications using {@code
   * executor}.
   *
   * @param listener the backing listener
   * @param executor the executor with which removal notifications are asynchronously executed
   */
  public static <K, V> RemovalListener<K, V> asynchronous(