reserializeAndAssert(multiset);
  }

  public void testIdentityKeyEquality_strongKeys() {
    testIdentityKeyEquality(STRONG);
  }

  public void testIdentityKeyEquality_weakKeys() {
    testIdentityKeyEquality(WEAK);
  }

  private void testIdentityKeyEquality(MapMakerInternalMap.Strength keyStrength) {

    ConcurrentMap<String, AtomicInteger> map =