// Default constructor
        }

        /**
         * The queue for URLs waiting to be crawled.
         */
        protected Queue<OpenSearchUrlQueue> waitingQueue = new ConcurrentLinkedQueue<>();

        /**
         * The queue for URLs currently being crawled.
         */
        protected Queue<OpenSearchUrlQueue> crawlingQueue = new ConcurrentLinkedQueue<>();
    }

    /**

	Events []Name `xml:"Event" json:"Event"`
}

// Queue - represents elements inside <QueueConfiguration>
type Queue struct {
	common
	ARN ARN `xml:"Queue"`
}

// UnmarshalXML - decodes XML data.
func (q *Queue) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
	// Make subtype to avoid recursive UnmarshalXML().
	type queue Queue
	parsedQueue := queue{}

        sessionMap.clear();
    }

    /**
     * Returns the URL queue for the specified session ID.
     * Creates a new queue if one doesn't exist.
     * @param sessionId the session ID
     * @return the URL queue for the session
     */
    public synchronized Queue<UrlQueueImpl<Long>> getUrlQueueList(final String sessionId) {
        Queue<UrlQueueImpl<Long>> urlQueueList = urlQueueMap.get(sessionId);

                }
            }
        }
        return OptionalEntity.empty();
    }

    /**
     * Processes the search log queue.
     *
     * @param queue The search log queue.
     */
    protected void processSearchLogQueue(final Queue<SearchLog> queue) {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        final String value = fessConfig.getPurgeByBots();
        String[] botNames;

import com.google.errorprone.annotations.CanIgnoreReturnValue;
import java.util.NoSuchElementException;
import java.util.Queue;
import org.jspecify.annotations.Nullable;

/**
 * A queue which forwards all its method calls to another queue. Subclasses should override one or
 * more methods to modify the behavior of the backing queue as desired per the <a
 * href="http://en.wikipedia.org/wiki/Decorator_pattern">decorator pattern</a>.
 *

    return QueueTestSuiteBuilder.using(
            new TestStringQueueGenerator() {
              @Override
              public Queue<String> create(String[] elements) {
                Queue<String> queue = new LinkedList<>(MinimalCollection.of(elements));
                return Collections.checkedQueue(queue, String.class);
              }
            })
        .named("checkedQueue/LinkedList")
        .withFeatures(

  private final BlockingQueue<HttpUrl> queue;
  private final ConcurrentHashMap<String, AtomicInteger> hostnames = new ConcurrentHashMap<>();
  private final int hostLimit;

  public Crawler(OkHttpClient client, int queueLimit, int hostLimit) {
    this.client = client;
    this.queue = new LinkedBlockingQueue<>(queueLimit);
    this.hostLimit = hostLimit;
  }

    /** The metadata associated with the URL queue. */
    protected String metaData;

    /** The encoding of the URL queue. */
    protected String encoding;

    /** The parent URL of the current URL in the queue. */
    protected String parentUrl;

    /** The depth of the URL in the queue. */
    protected Integer depth;

    /** The last modified timestamp of the URL in the queue. */
    protected Long lastModified;

    public MethodMetaData getOverriddenMethod() {
        LinkedList<ClassMetaData> queue = new LinkedList<ClassMetaData>();
        queue.add(ownerClass.getSuperClass());
        queue.addAll(ownerClass.getInterfaces());

        String overrideSignature = getOverrideSignature();

        while (!queue.isEmpty()) {
            ClassMetaData cl = queue.removeFirst();
            if (cl == null) {
                continue;
            }

    ListenerCallQueue<Object> queue = new ListenerCallQueue<>();
    queue.addListener(listener, directExecutor());

    Multiset<Object> counters = ConcurrentHashMultiset.create();
    queue.enqueue(incrementingEvent(counters, listener, 1));
    queue.enqueue(THROWING_EVENT);
    queue.enqueue(incrementingEvent(counters, listener, 2));
    queue.enqueue(THROWING_EVENT);
    queue.enqueue(incrementingEvent(counters, listener, 3));