protected Logger statsLogger = null;

    /** Name of the logger used for statistics output. */
    protected String loggerName = "fess.log.crawler.stats";

    /** Maximum number of statistics objects to cache. */
    protected long maxCacheSize = 1000;

    /** Time in milliseconds after which cache entries expire after write. */
    protected long cacheExpireAfterWrite = 10 * 60 * 1000L;

   *
   * @since 10.0
   */
  public interface StatsCounter {
    /**
     * Records cache hits. This should be called when a cache request returns a cached value.
     *
     * @param count the number of hits to record
     * @since 11.0
     */
    void recordHits(int count);

    /**
     * Records cache misses. This should be called when a cache request returns a value that was not

          Collector<T, A, R> collector, BiPredicate<? super R, ? super R> equivalence) {
    return new CollectorTester<>(collector, equivalence);
  }

  private final Collector<T, A, R> collector;
  private final BiPredicate<? super R, ? super R> equivalence;

  private CollectorTester(
      Collector<T, A, R> collector, BiPredicate<? super R, ? super R> equivalence) {
    this.collector = checkNotNull(collector);

  @J2ktIncompatible
  @GwtIncompatible // not used under GWT, and super.getName() is not available under J2CL
  public final String getTestMethodName() {
    return super.getName();
  }

  @J2ktIncompatible
  @GwtIncompatible // not used under GWT, and super.getName() is not available under J2CL
  @Override
  public String getName() {
    return super.getName() + '[' + suiteName + ']';
  }

  /**

  @J2ktIncompatible
  @GwtIncompatible // not used under GWT, and super.getName() is not available under J2CL
  public final String getTestMethodName() {
    return super.getName();
  }

  @J2ktIncompatible
  @GwtIncompatible // not used under GWT, and super.getName() is not available under J2CL
  @Override
  public String getName() {
    return super.getName() + '[' + suiteName + ']';
  }

  /**

   *
   * @since 23.1
   */
  public static <T extends @Nullable Object, K extends Comparable<? super K>, V>
      Collector<T, ?, ImmutableRangeMap<K, V>> toImmutableRangeMap(
          Function<? super T, Range<K>> keyFunction,
          Function<? super T, ? extends V> valueFunction) {
    return CollectCollectors.toImmutableRangeMap(keyFunction, valueFunction);
  }

  /**

  }

  @Override
  public void clear() {
    delegate.clear();
  }

  @Override
  public Comparator<? super E> comparator() {
    Comparator<? super E> comparator = delegate.comparator();
    if (comparator == null) {
      comparator = (Comparator<? super E>) NATURAL_ORDER;
    }
    return comparator;
  }

  @Override
  public boolean contains(Object object) {

        super(e);
    }

    /**
     * Constructs a new JobProcessingException with the specified detail message and cause.
     *
     * @param message the detail message explaining the exception
     * @param e the cause of the exception
     */
    public JobProcessingException(final String message, final Throwable e) {
        super(message, e);
    }

    /**

  REMOVE_OPERATIONS(CollectionFeature.REMOVE_OPERATIONS, SUPPORTS_REMOVE_WITH_INDEX);

  private final Set<Feature<? super List>> implied;

  ListFeature(Feature<? super List>... implied) {
    this.implied = copyToSet(implied);
  }

  @Override
  public Set<Feature<? super List>> getImpliedFeatures() {
    return implied;
  }

  @Retention(RetentionPolicy.RUNTIME)
  @Inherited
  @TesterAnnotation

    public DefaultJavaToolChain(ToolchainModel model, Logger logger) {
        super(model, logger);
    }

    @Override
    public String getJavaHome() {
        return super.getJavaHome();
    }

    @Override
    public void setJavaHome(String javaHome) {
        super.setJavaHome(javaHome);
    }