// cleared
    ReferenceEntry<Object, Object> entry = segment.getEntry(key, hash);
    DummyValueReference<Object, Object> oldValueRef = DummyValueReference.create(oldValue);
    entry.setValueReference(oldValueRef);
    assertSame(oldValue, segment.get(key, hash));
    oldValueRef.clear();
    assertNull(segment.put(key, hash, newValue, false));
    assertEquals(1, segment.count);