Object valueOne = new Object();
        Object keyTwo = new Object();
        Object valueTwo = new Object();

        map.put(keyOne, valueOne);
        WeakValueEntry<Object, Object, ?> entry =
            (WeakValueEntry<Object, Object, ?>) segment.getEntry(keyOne, hashOne);
        WeakValueReference<Object, Object, ?> valueReference = entry.getValueReference();

        @SuppressWarnings("unchecked")

        Object valueOne = new Object();
        Object keyTwo = new Object();
        Object valueTwo = new Object();

        map.put(keyOne, valueOne);
        WeakValueEntry<Object, Object, ?> entry =
            (WeakValueEntry<Object, Object, ?>) segment.getEntry(keyOne, hashOne);
        WeakValueReference<Object, Object, ?> valueReference = entry.getValueReference();

        @SuppressWarnings("unchecked")

  interface StrongValueEntry<K, V, E extends InternalEntry<K, V, E>>
      extends InternalEntry<K, V, E> {}

  /** Marker interface for {@link InternalEntry} implementations for weak values. */
  interface WeakValueEntry<K, V, E extends InternalEntry<K, V, E>> extends InternalEntry<K, V, E> {
    /** Gets the weak value reference held by entry. */
    WeakValueReference<K, V, E> getValueReference();
  }