static AnyController()
        {
            DerivedTypeA a = new DerivedTypeA
            {
                Id        = 1,
                Name      = "Name #1",
                PropertyA = 88
            };

            Entities.Add(a);

            DerivedTypeB b = new DerivedTypeB
            {
                Id        = 2,
                Name      = "Name #2",
                PropertyB = 99.9,
            };

            Entities.Add(b);
        }
        static AnyController()
        {
            DerivedTypeA a = new DerivedTypeA
            {
                Id = 1,
                Name = "Name #1",
                PropertyA = 88
            };
            Entities.Add(a);

            DerivedTypeB b = new DerivedTypeB
            {
                Id = 2,
                Name = "Name #2",
                PropertyB = 99.9,
            };
            Entities.Add(b);
        }