OutputEditors

You can add an OutputEditor like this:

client.GetProducts.Out = new Func<ClientRequest>(() => {
    var request = new ClientRequest();
    request.Headers.Add("apikey", "1235467890");
    return request;
});

client.GetProducts();

or when you want to add a header from the function parameters.

client.GetProducts.Out = new Func<string, ClientRequest>(apikey => {
    var request = new ClientRequest();
    request.Headers.Add("apikey", apikey);
    return request;
});

client.GetProducts("1234567890");

you can also serialize an object from the function paramters like this for a post or put request.

client.PutProducts.Out = new Func<Product, ClientRequest>(product => {
    var serializer = new XmlSerializer(typeof(Product));
    var request = new ClientRequest();
    usign (var ms = new MemoryStream()){
        serializer.Serialize(product, ms);
    }
    request.Body = ms.ToArray();
    return request;
});

client.PutProducts(new Product{
    ProductID = 5,
    Name = "Bananas",
    Price = 5.87f
});

And you can add an OutputEditor via a parameter to the function call like this:

client.GetProducs(new Func<Request>(() => new Request().Headers.Add("apikey","12334567890"));