}

  /**
   * Returns the empty multimap.
   *
   * <p><b>Performance note:</b> the instance returned is a singleton.
   */
  // Casting is safe because the multimap will never hold any elements.
  @SuppressWarnings("unchecked")
  public static <K, V> ImmutableListMultimap<K, V> of() {
    return (ImmutableListMultimap<K, V>) EmptyImmutableListMultimap.INSTANCE;
  }

	buckets []bucket[K, V]
	// uint8 because it's number between 0 and numBuckets
	nextCleanupBucket uint8
}

// bucket is a container for holding entries to be expired
type bucket[K comparable, V any] struct {
	entries     map[K]*Entry[K, V]
	newestEntry time.Time
}

// noEvictionTTL - very long ttl to prevent eviction
const noEvictionTTL = time.Hour * 24 * 365 * 10

    }
  }

  /**
   * This is for covering a case where the ServiceManager would behave strangely if constructed with
   * no service under management. Listeners would never fire because the ServiceManager was healthy
   * and stopped at the same time. This test ensures that listeners fire and isHealthy makes sense.
   */
  public void testEmptyServiceManager() {

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    }

    protected ConditionBeanExceptionThrower createCBExThrower() {
        return new ConditionBeanExceptionThrower();
    }

    @Override
    public void xsetPaging(boolean paging) {
        // Do nothing because this is unsupported on ConditionBean.
        // And it is possible that this method is called by PagingInvoker.
    }

    @Override
    public void enablePagingCountLater() {
        // nothing
    }

    }

    protected ConditionBeanExceptionThrower createCBExThrower() {
        return new ConditionBeanExceptionThrower();
    }

    @Override
    public void xsetPaging(boolean paging) {
        // Do nothing because this is unsupported on ConditionBean.
        // And it is possible that this method is called by PagingInvoker.
    }

    @Override
    public void enablePagingCountLater() {
        // nothing
    }

  public TestThread(L lockLikeObject, String threadName) {
    super(threadName);
    this.lockLikeObject = checkNotNull(lockLikeObject);
    start();
  }

  // Thread.stop() is okay because all threads started by a test are dying at the end of the test,
  // so there is no object state put at risk by stopping the threads abruptly. In some cases a test

    // * Everything with (index > from) has not been checked yet.

    // Check from the end of the list backwards (minimize expected cost of
    // moving elements when remove() is called). Stop before 'from' because
    // we already know that should be kept.
    for (int n = list.size() - 1; n > from; n--) {
      if (predicate.apply(list.get(n))) {
        list.remove(n);
      }
    }

  }

  /**
   * Returns the empty multimap.
   *
   * <p><b>Performance note:</b> the instance returned is a singleton.
   */
  // Casting is safe because the multimap will never hold any elements.
  @SuppressWarnings("unchecked")
  public static <K, V> ImmutableListMultimap<K, V> of() {
    return (ImmutableListMultimap<K, V>) EmptyImmutableListMultimap.INSTANCE;
  }

    step4Waiter.awaitStarted();

    // Step 1 is not cancelled because it was done.
    assertWithMessage("step1.statusFuture().isCancelled()")
        .that(step1.statusFuture().isCancelled())
        .isFalse();
    // But its closeable is closed.
    assertClosed(closeable1);

    // Step 2 is cancelled because it wasn't complete.
    assertWithMessage("step2.statusFuture().isCancelled()")