/**
     * Lock object for synchronizing access to active thread count.
     */
    protected Object activeThreadCountLock = new Object();

    /**
     * Atomic counter for tracking the number of accesses made.
     */
    protected AtomicLong accessCount = new AtomicLong(0);

    /**
     * Current status of the crawler.
     */
    protected volatile CrawlerStatus status = CrawlerStatus.INITIALIZING;

            final List<UrlQueueImpl<Long>> targetList = new ArrayList<>();
            for (final UrlQueueImpl<Long> urlQueue : newUrlQueueList) {
                if (isNewUrl(urlQueue, urlQueueList)) {
                    targetList.add(urlQueue);
                }
            }
            urlQueueList.addAll(targetList);
        }

    }

    /**
     * Checks if a URL is new.
     *
     * @param urlQueue The URL queue.

        this.lastActivityTime = establishedTime;

        this.bytesSent = new AtomicLong();
        this.bytesReceived = new AtomicLong();
        this.requestsSent = new AtomicLong();
        this.requestsReceived = new AtomicLong();
        this.errors = new AtomicLong();

        this.isPrimary = false;
        this.pendingOperations = new CopyOnWriteArrayList<>();
    }

    /**
     * Get channel ID
     *

            _specification = new HpSpecification();
        }
        return _specification;
    }

    protected void assertQueryPurpose() {
    }

    protected void assertAggregationPurpose() {
    }

    protected void assertSpecifyPurpose() {
    }

    public static class HpSpecification {
        protected List<String> columnList = new ArrayList<>();

            _specification = new HpSpecification();
        }
        return _specification;
    }

    protected void assertQueryPurpose() {
    }

    protected void assertAggregationPurpose() {
    }

    protected void assertSpecifyPurpose() {
    }

    public static class HpSpecification {
        protected List<String> columnList = new ArrayList<>();

        }

        if (handler == null) {
            handler = artifactHandlerManager.getArtifactHandler("jar");
        }

        Artifact artifact = new AttachedArtifact(project.getArtifact(), artifactType, artifactClassifier, handler);

        artifact.setFile(artifactFile);
        artifact.setResolved(true);

        attachArtifact(project, artifact);
    }

 *
 * {@snippet :
 * new TypeVisitor() {
 *   protected void visitParameterizedType(ParameterizedType t) {
 *     visit(t.getOwnerType());
 *     visit(t.getActualTypeArguments());
 *   }
 *   protected void visitGenericArrayType(GenericArrayType t) {
 *     visit(t.getGenericComponentType());
 *   }
 *   protected void visitTypeVariable(TypeVariable<?> t) {

    return new IntHashCode(hash);
  }

  private static final class IntHashCode extends HashCode implements Serializable {
    final int hash;

    IntHashCode(int hash) {
      this.hash = hash;
    }

    @Override
    public int bits() {
      return 32;
    }

    @Override
    public byte[] asBytes() {

        validateApi(body, messages -> {});
        final GroupPager pager = copyBeanToNewBean(body, GroupPager.class);
        final List<Group> list = groupService.getGroupList(pager);
        return asJson(
                new ApiResult.ApiConfigsResponse<EditBody>().settings(list.stream().map(this::createEditBody).collect(Collectors.toList()))
                        .total(pager.getAllRecordCount())
                        .status(ApiResult.Status.OK)

        final BoostDocPager pager = copyBeanToNewBean(body, BoostDocPager.class);
        final List<BoostDocumentRule> list = boostDocumentRuleService.getBoostDocumentRuleList(pager);
        return asJson(new ApiConfigsResponse<EditBody>().settings(list.stream().map(this::createEditBody).collect(Collectors.toList()))
                .total(pager.getAllRecordCount())
                .status(Status.OK)
                .result());
    }