*     flooding attack
   */
  @CanIgnoreReturnValue
  @CheckForNull
  static <K, V> ImmutableMapEntry<K, V> checkNoConflictInKeyBucket(
      Object key,
      Object newValue,
      @CheckForNull ImmutableMapEntry<K, V> keyBucketHead,
      boolean throwIfDuplicateKeys)
      throws BucketOverflowException {
    int bucketSize = 0;

  }

  @CanIgnoreReturnValue
  @Override
  public boolean replace(K key, @CheckForNull V oldValue, V newValue) {
    checkNotNull(key);
    checkNotNull(newValue);
    if (oldValue == null) {
      return false;
    }
    int hash = hash(key);
    return segmentFor(hash).replace(key, hash, oldValue, newValue);
  }

  @CheckForNull
  @CanIgnoreReturnValue
  @Override

  @CollectionSize.Require(absent = ZERO)
  public void testComputeIfAbsent_nullTreatedAsAbsent() {
    initMapWithNullValue();
    assertEquals(
        "computeIfAbsent(presentAssignedToNull, function) should return newValue",
        getValueForNullKey(),
        getMap()
            .computeIfAbsent(
                getKeyForNullValue(),
                k -> {
                  assertEquals(getKeyForNullValue(), k);

  }

  private static void insertIntoReplica(Map<Integer, AtomicInteger> replica, int newValue) {
    if (replica.containsKey(newValue)) {
      replica.get(newValue).incrementAndGet();
    } else {
      replica.put(newValue, new AtomicInteger(1));
    }
  }

  private static void removeMinFromReplica(
      SortedMap<Integer, AtomicInteger> replica, int minValue) {

  }

  @CanIgnoreReturnValue
  @Override
  public boolean replace(K key, @CheckForNull V oldValue, V newValue) {
    checkNotNull(key);
    checkNotNull(newValue);
    if (oldValue == null) {
      return false;
    }
    int hash = hash(key);
    return segmentFor(hash).replace(key, hash, oldValue, newValue);
  }

  @CheckForNull
  @CanIgnoreReturnValue
  @Override

      @ParametricNullness K key,
      boolean containedKey,
      @CheckForNull V oldValue,
      @ParametricNullness V newValue) {
    if (containedKey) {
      // The cast is safe because of the containedKey check.
      removeFromInverseMap(uncheckedCastNullableTToT(oldValue));
    }
    inverse.delegate.put(newValue, key);
  }

  @CanIgnoreReturnValue
  @Override
  @CheckForNull

      Entry<Cut<K>, RangeMapEntry<K, V>> entry = backingItr.next();
      V newValue = remappingFunction.apply(entry.getValue().getValue(), value);
      if (newValue == null) {
        backingItr.remove();
      } else {
        entry.setValue(
            new RangeMapEntry<K, V>(
                entry.getValue().getLowerBound(), entry.getValue().getUpperBound(), newValue));
      }
    }

    entriesByLowerBound.putAll(gaps.build());

                var newValue = this.startDate.format(this.locale.format);
                if (!this.singleDatePicker) {
                    newValue += this.locale.separator + this.endDate.format(this.locale.format);
                }
                if (newValue !== this.element.val()) {
                    this.element.val(newValue).trigger('change');
                }
            }

    @Override
    @ParametricNullness
    public V getValue() {
      return value;
    }

    @Override
    @ParametricNullness
    public V setValue(@ParametricNullness V newValue) {
      V result = value;
      this.value = newValue;
      return result;
    }
  }

  private static class KeyList<K extends @Nullable Object, V extends @Nullable Object> {
    Node<K, V> head;
    Node<K, V> tail;

    @CheckForNull
    public T get() {
      return value;
    }

    public void checkAndSet(@CheckForNull T expected, @CheckForNull T newValue) {
      if (value != expected) {
        throw new ConcurrentModificationException();
      }
      value = newValue;
    }

    void clear() {
      value = null;
    }
  }

  private static final class AvlNode<E extends @Nullable Object> {