public void When_creating_any_request_adding_a_header_then_get_headers_contains_added_header()
        {
            var sut = new MyRequest();

            sut.AddHeader("test", "test");

            Assert.NotNull(sut.GetHeaders().FirstOrDefault(h => h.Key == "test"));
        }
        public void When_creating_any_request_then_get_headers_never_returns_null()
        {
            var sut = new MyRequest();

            Assert.NotNull(sut.GetHeaders());
        }