public void testPutAbsentConcurrentWithEntrySetIteration() {
    assertThrows(
        ConcurrentModificationException.class,
        () -> {
          Iterator<Entry<K, V>> iterator = getMap().entrySet().iterator();
          put(e3());
          iterator.next();
        });
  }

  @MapFeature.Require({FAILS_FAST_ON_CONCURRENT_MODIFICATION, SUPPORTS_PUT})
  @CollectionSize.Require(absent = ZERO)

  }

  public void testOrderedAsMapEntries() {
    TreeMultimap<@Nullable String, @Nullable Integer> multimap = createPopulate();
    Iterator<Entry<String, Collection<Integer>>> iterator = multimap.asMap().entrySet().iterator();
    Entry<String, Collection<Integer>> entry = iterator.next();
    assertEquals(null, entry.getKey());
    assertThat(entry.getValue()).containsExactly(7, 3, 1);
    entry = iterator.next();

        if (!autoCleanupEnabled) {
            return;
        }

        int cleaned = 0;
        long now = System.currentTimeMillis();

        for (Map.Entry<String, ResourceHolder> entry : activeResources.entrySet()) {
            ResourceHolder holder = entry.getValue();

            // Check if resource is abandoned
            if (!holder.closed && !holder.isAlive()) {

    Map<@Nullable String, @Nullable String> mapWithNulls = new LinkedHashMap<>();
    mapWithNulls.put("a", null);
    mapWithNulls.put(null, "b");
    Set<Entry<String, String>> entriesWithNulls = mapWithNulls.entrySet();

    assertThrows(NullPointerException.class, () -> j.join(entriesWithNulls));

    assertThrows(NullPointerException.class, () -> j.join(entriesWithNulls.iterator()));

        final List<AccessResultImpl<Long>> acList = new ArrayList<>();
        for (final Map.Entry<String, Map<String, AccessResultImpl<Long>>> entry : sessionMap.entrySet()) {
            if (entry.getValue() != null) {
                final AccessResultImpl<Long> ar = entry.getValue().get(url);
                if (ar != null) {
                    acList.add(ar);
                }

                new MapEntrySetGenerator<K, V>(parentBuilder.getSubjectGenerator()))
            .withFeatures(computeEntrySetFeatures(parentBuilder.getFeatures()))
            .named(parentBuilder.getName() + " entrySet")
            .suppressing(parentBuilder.getSuppressedTests())
            .withSetUp(parentBuilder.getSetUp())
            .withTearDown(parentBuilder.getTearDown())
            .createTestSuite());

        fesenClient.addOnConnectListener(() -> createMapping("queue"));
    }

    /**
     * Destroys the service.
     */
    @PreDestroy
    public void destroy() {
        sessionCache.entrySet().stream().map(e -> e.getValue().waitingQueue).forEach(q -> q.forEach(urlQueue -> {
            try {
                insert(urlQueue);
            } catch (final Exception e) {

            }
        }

        if (infoMap != null) {
            final List<CrawlingInfoParam> crawlingInfoParamList = new ArrayList<>();
            for (final Map.Entry<String, String> entry : infoMap.entrySet()) {
                final CrawlingInfoParam crawlingInfoParam = new CrawlingInfoParam();
                crawlingInfoParam.setCrawlingInfoId(crawlingInfo.getId());
                crawlingInfoParam.setKey(entry.getKey());

        final Map<String, Object> newDataMap = new LinkedHashMap<>();
        for (final Map.Entry<String, Object> e : dataMap.entrySet()) {
            if (fieldConfigs.getConfig(e.getKey()).map(FieldConfigs.Config::isOverwrite).orElse(false)
                    && e.getValue() instanceof final Object[] values && values.length > 0) {

    }

    @Override
    protected Set<Entry<K, Collection<V>>> createEntrySet() {
      return new EntrySet();
    }

    void removeValuesForKey(@Nullable Object key) {
      multimap.keySet().remove(key);
    }

    @WeakOuter
    final class EntrySet extends Maps.EntrySet<K, Collection<V>> {
      @Override
      Map<K, Collection<V>> map() {
        return AsMap.this;
      }