public static void Should_only_serielize_key()
        {
            var sut = new JsonKeyTestPerent
            {
                id      = 1,
                name    = "testing perent",
                keyTest = new JsonKeyTest {
                    id = 5, name = "testing child"
                },
            };

            var final = JsonConvert.SerializeObject(sut);

            Assert.Equal(sampleJson, final);
        }
        public static void Should_only_deserielize_key()
        {
            var sut = new JsonKeyTestPerent
            {
                id      = 1,
                name    = "testing perent",
                keyTest = new JsonKeyTest {
                    id = 5
                },
            };


            var final = JsonConvert.DeserializeObject <JsonKeyTestPerent>(sampleJson);

            Assert.Equal(sut.id, final.id);
            Assert.Equal(sut.keyTest.id, final.keyTest.id);
        }