gistfile1.cs

         public class ComplexClass
        {
            private readonly float _sampleValue;
            public float SampleValue
            {
                get { return _sampleValue; }
            }
            protected int A { get; set; }
            public SerializableClass SerializableProperty { get; set; }
            public bool IsFunny
            {
                get { return false; }
            }

            internal CircularClass _circularClass;

            public ComplexClass()
                : this(200)
            {
            }

            public ComplexClass(float value)
            {
                _sampleValue = value;
            }
        }

        public class CircularClass
        {
            private ComplexClass _complexClass;
            public CircularClass(ComplexClass c)
            {
                _complexClass = c;
            }
        }
       [Serializable]
        public class SerializableClass
        {
            public int A { get; set; }
            public string B { get; set; }
        }