Object valueOne = new Object();
      int hashOne = map.hash(keyOne);
      InternalEntry<Object, Object, ?> entryOne = segment.newEntryForTesting(keyOne, hashOne, null);
      segment.setValueForTesting(entryOne, valueOne);

      Object keyTwo = new Object();
      Object valueTwo = new Object();
      int hashTwo = map.hash(keyTwo);
      InternalEntry<Object, Object, ?> entryTwo = segment.newEntryForTesting(keyTwo, hashTwo, null);

      Object valueOne = new Object();
      int hashOne = map.hash(keyOne);
      InternalEntry<Object, Object, ?> entryOne = segment.newEntryForTesting(keyOne, hashOne, null);
      segment.setValueForTesting(entryOne, valueOne);

      Object keyTwo = new Object();
      Object valueTwo = new Object();
      int hashTwo = map.hash(keyTwo);
      InternalEntry<Object, Object, ?> entryTwo = segment.newEntryForTesting(keyTwo, hashTwo, null);

    }
  }

  /** Marker interface for {@link InternalEntry} implementations for strong values. */
  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> {