@ElementTypesAreNonnullByDefault
class ObjectCountLinkedHashMap<K extends @Nullable Object> extends ObjectCountHashMap<K> {
  /** Creates an empty {@code ObjectCountLinkedHashMap} instance. */
  static <K extends @Nullable Object> ObjectCountLinkedHashMap<K> create() {
    return new ObjectCountLinkedHashMap<K>();
  }

  /**
   * Creates a {@code ObjectCountLinkedHashMap} instance, with a high enough "initial capacity" that