public void NewOperatorTest()
        {
            var p = new CSharp6Lab.Person {Name = "tom"};

            var a= p.Adress?.Street ?? "brak";

            Assert.IsTrue(a.Equals("brak"));
        }
        public void NewOperatorTest2()
        {
            var p = new CSharp6Lab.Person {Name = "tom"};

            var a = p.Adress?.Street ??"nie można dodać throw exc :( ";

            Assert.IsTrue(a.Contains("nie można"));
            //throw new MyTestException("aaaa");
        }