}

  @Override
  @CheckForNull
  public V get(@CheckForNull Object key) {
    int entry = findEntryByKey(key);
    return (entry == ABSENT) ? null : values[entry];
  }

  @CheckForNull
  K getInverse(@CheckForNull Object value) {
    int entry = findEntryByValue(value);
    return (entry == ABSENT) ? null : keys[entry];
  }

  @Override
  @CanIgnoreReturnValue
  @CheckForNull

    delegate = forward;
    inverse = makeInverse(backward);
  }

  AbstractBiMap<V, K> makeInverse(Map<V, K> backward) {
    return new Inverse<>(backward, this);
  }

  void setInverse(AbstractBiMap<V, K> inverse) {
    this.inverse = inverse;
  }

  // Query Operations (optimizations)

  @Override
  public boolean containsValue(@CheckForNull Object value) {