public void fetch()
        {
            var comparison = new StringListComparison("expected", c => new String[]{"red", "blue", "green"});
            var task = comparison.Fetch(SpecContext.ForTesting());

            task.Wait();

            task.Result.Select(x => x.Get("expected"))
                .ShouldHaveTheSameElementsAs("red", "blue", "green");
        }