RegularImmutableMap.create(1, new Object[] {new NonSerializableClass(), "value"});
    Collection<String> collection = map.values();

    LenientSerializableTester.reserializeAndAssertElementsEqual(collection);
  }

  // TODO: Re-enable this test after moving to new serialization format in ImmutableMap.
  @J2ktIncompatible
  @GwtIncompatible // SerializableTester
  @SuppressWarnings("unchecked")