.collect(Collectors.groupingBy(Function.identity(), Collectors.counting()))
                .entrySet()
                .stream()
                .filter(p -> p.getValue() > 1)
                .map(Map.Entry::getKey)
                .collect(Collectors.toSet());

        // schedule independent projects (ordered by critical path priority)
        for (MavenProject mavenProject : analyzer.getRootSchedulableBuilds()) {

    // If it's an Entry, it may become invalid once it's removed from the Map. Copy it.
    if (element instanceof Entry) {
      Entry<?, ?> entry = (Entry<?, ?>) element;
      element = mapEntry(entry.getKey(), entry.getValue());
    }
    assertTrue(collection.contains(element)); // sanity check
    iterator.remove();
    assertFalse(collection.contains(element));
    assertEquals(originalSize - 1, collection.size());

                    ListMultimap<String, String> multimap = ArrayListMultimap.create();
                    for (Entry<String, String> entry : entries) {
                      multimap.put(entry.getKey(), entry.getValue());
                    }
                    return multimap;
                  }
                })
            .named("ArrayListMultimap")
            .withFeatures(

  public void testAsMapGet() {
    for (K key : sampleKeys()) {
      List<V> expectedValues = new ArrayList<>();
      for (Entry<K, V> entry : getSampleElements()) {
        if (entry.getKey().equals(key)) {
          expectedValues.add(entry.getValue());
        }
      }

      Collection<V> collection = multimap().asMap().get(key);
      if (expectedValues.isEmpty()) {
        assertNull(collection);

    super(expectedSize, loadFactor);
  }

  ObjectCountLinkedHashMap(ObjectCountHashMap<K> map) {
    init(map.size(), DEFAULT_LOAD_FACTOR);
    for (int i = map.firstIndex(); i != -1; i = map.nextIndex(i)) {
      put(map.getKey(i), map.getValue(i));
    }
  }

  @Override
  void init(int expectedSize, float loadFactor) {
    super.init(expectedSize, loadFactor);
    firstEntry = ENDPOINT;
    lastEntry = ENDPOINT;

            throw new UncheckedExecutionException(e);
          }
        });

    CacheTesting.checkEmpty(cache);
    for (RemovalNotification<String, String> entry : notifications) {
      assertThat(entry.getKey()).isNotNull();
      assertThat(entry.getValue()).isNotNull();
    }
  }

  public void testComputeExceptionally() {
    assertThrows(
        RuntimeException.class,
        () ->

                    vmDependencies
                );
            } else {
                for (var entry : linuxTestTasks.entrySet()) {
                    ElasticsearchDistributionType type = entry.getKey();
                    TaskProvider<?> vmLifecycleTask = vmLifecyleTasks.get(type);
                    configureVMWrapperTasks(vmProject, entry.getValue(), depsTasks, wrapperTask -> {

                        return new Entry<String, String>() {
                            @Override
                            public String getKey() {
                                return entry.getKey();
                            }

                            @Override
                            public String getValue() {
                                return entry.getValue();

                        return new Entry<String, String>() {
                            @Override
                            public String getKey() {
                                return entry.getKey();
                            }

                            @Override
                            public String getValue() {
                                return entry.getValue();

    assertNull("put(null, null) should return null", put(nullKeyValueEntry));
    expectAdded(nullKeyValueEntry);
  }

  @CanIgnoreReturnValue
  private V put(Entry<K, V> entry) {
    return getMap().put(entry.getKey(), entry.getValue());
  }

  /**
   * Returns the {@link Method} instance for {@link #testPut_nullKeyUnsupported()} so that tests of
   * {@link java.util.TreeMap} can suppress it with {@code