@SuppressWarnings("unchecked")
      WeakValueReference<K, V, StrongKeyWeakValueEntry<K, V>> newValueReference =
          (WeakValueReference<K, V, StrongKeyWeakValueEntry<K, V>>) valueReference;
      WeakValueReference<K, V, StrongKeyWeakValueEntry<K, V>> previous = entry.valueReference;
      entry.valueReference = newValueReference;
      previous.clear();
    }

    @Override
    void maybeDrainReferenceQueues() {

      @SuppressWarnings("unchecked")
      WeakValueReference<K, V, StrongKeyWeakValueEntry<K, V>> newValueReference =
          (WeakValueReference<K, V, StrongKeyWeakValueEntry<K, V>>) valueReference;
      WeakValueReference<K, V, StrongKeyWeakValueEntry<K, V>> previous = entry.valueReference;
      entry.valueReference = newValueReference;
      previous.clear();
    }

    @Override
    void maybeDrainReferenceQueues() {

      entryOne.setValueReference(map.newValueReference(entryOne, valueOne, 1));

      Object keyTwo = new Object();
      Object valueTwo = new Object();
      int hashTwo = map.hash(keyTwo);
      ReferenceEntry<Object, Object> entryTwo = map.newEntry(keyTwo, hashTwo, entryOne);
      entryTwo.setValueReference(map.newValueReference(entryTwo, valueTwo, 1));
      if (map.usesAccessQueue()) {

      entryOne.setValueReference(map.newValueReference(entryOne, valueOne, 1));

      Object keyTwo = new Object();
      Object valueTwo = new Object();
      int hashTwo = map.hash(keyTwo);
      ReferenceEntry<Object, Object> entryTwo = map.newEntry(keyTwo, hashTwo, entryOne);
      entryTwo.setValueReference(map.newValueReference(entryTwo, valueTwo, 1));
      if (map.usesAccessQueue()) {

  }

  /**
   * This method is a convenience for testing. Code should call {@link Segment#setValue} instead.
   */
  // Guarded By Segment.this
  @VisibleForTesting
  ValueReference<K, V> newValueReference(ReferenceEntry<K, V> entry, V value, int weight) {
    int hash = entry.getHash();
    return valueStrength.referenceValue(segmentFor(hash), entry, checkNotNull(value), weight);
  }

  }

  /**
   * This method is a convenience for testing. Code should call {@link Segment#setValue} instead.
   */
  // Guarded By Segment.this
  @VisibleForTesting
  ValueReference<K, V> newValueReference(ReferenceEntry<K, V> entry, V value, int weight) {
    int hash = entry.getHash();
    return valueStrength.referenceValue(segmentFor(hash), entry, checkNotNull(value), weight);
  }