}

  @Override
  public int bits() {
    return 64;
  }

  @Override
  public Hasher newHasher() {
    return new SipHasher(c, d, k0, k1);
  }

  // TODO(kak): Implement and benchmark the hashFoo() shortcuts.

  @Override
  public String toString() {
    return "Hashing.sipHash" + c + "" + d + "(" + k0 + ", " + k1 + ")";
  }

  @Override
  public boolean equals(@Nullable Object object) {

      Object keyTwo = new Object();
      Object valueTwo = new Object();
      int hashTwo = map.hash(keyTwo);

      InternalEntry<Object, Object, ?> entryTwo =
          segment.newEntryForTesting(keyTwo, hashTwo, entryOne);
      WeakValueReference<Object, Object, ?> valueRefTwo =
          segment.newWeakValueReferenceForTesting(entryTwo, valueTwo);

      Object keyTwo = new Object();
      Object valueTwo = new Object();
      int hashTwo = map.hash(keyTwo);

      InternalEntry<Object, Object, ?> entryTwo =
          segment.newEntryForTesting(keyTwo, hashTwo, entryOne);
      WeakValueReference<Object, Object, ?> valueRefTwo =
          segment.newWeakValueReferenceForTesting(entryTwo, valueTwo);

      assertThat(entryOne.getValueReference()).isSameInstanceAs(valueRefOne);

      Object keyTwo = new Object();
      Object valueTwo = new Object();
      int hashTwo = map.hash(keyTwo);
      ReferenceEntry<Object, Object> entryTwo = map.newEntry(keyTwo, hashTwo, entryOne);
      ValueReference<Object, Object> valueRefTwo = map.newValueReference(entryTwo, valueTwo, 1);
      assertThat(valueRefTwo.get()).isSameInstanceAs(valueTwo);

      assertThat(entryOne.getValueReference()).isSameInstanceAs(valueRefOne);

      Object keyTwo = new Object();
      Object valueTwo = new Object();
      int hashTwo = map.hash(keyTwo);
      ReferenceEntry<Object, Object> entryTwo = map.newEntry(keyTwo, hashTwo, entryOne);
      ValueReference<Object, Object> valueRefTwo = map.newValueReference(entryTwo, valueTwo, 1);
      assertThat(valueRefTwo.get()).isSameInstanceAs(valueTwo);