/** Constructs a new empty instance of {@code CompactHashSet}. */
  CompactHashSet() {
    init(CompactHashing.DEFAULT_SIZE);
  }

  /**
   * Constructs a new instance of {@code CompactHashSet} with the specified capacity.
   *
   * @param expectedSize the initial capacity of this {@code CompactHashSet}.
   */
  CompactHashSet(int expectedSize) {
    init(expectedSize);
  }