EncapsulatedResultConsumer.cs

public class MyCoolService
{
    public Result<CoolThing> Fetch(Uri uri)
    {
        HttpResponseMessage response = CallThatThingInTheCloud(uri);

        return response.IsSuccessStatusCode
                    ? Result<CoolThing>.Success(Deserialize(response))
                    : Result<CoolThing>.Error(response.StatusCode, response.ReasonPhrase);
    }
    //...
}