public void TestSerialization()
        {
            Container x1 = CreateObject <Container>().WithName("Ennea");

            Assert.IsNull(x1.ParentContainer);

            x1.AddTag("Greek");
            x1.AddTag("Girl");

            var x2 = SerializeAndDeserialize(x1);

            AssertForSpecs.AreEqualEntity(x2, x1);
        }