public void CorrectRequestForGet() {
            var factory = Substitute.For<IConnection>();
            var client = new VpcClient(factory);

            client.Get("abcdefg");

            var parameters = Arg.Is<List<Parameter>>(list => (string)list[0].Value == "abcdefg");
            factory.Received().ExecuteRequest<Vpc>("vpcs/{id}", parameters, null, "vpc");
        }