Func<ImmutableDictionary<string, object>,
    CustomResourceOptions, ImmutableDictionary<string, object>>[] transformations =
{
    (obj, opts) => {
        if ((string)obj["kind"] == "Service" &&
                (string)((ImmutableDictionary<string, object>)obj["metadata"])["name"] == "frontend")
        {
            var spec = ((ImmutableDictionary<string, object>)obj["spec"]);
            obj = obj.SetItem("spec", spec.SetItem("type", "LoadBalancer"));
        }
        return obj;
    },
};
var guestbook = new ConfigFile("guestbook", new ConfigFileArgs
{
    File = "guestbook-all-in-one.yaml",
    Transformations = transformations,
});

The typings in the example don't appear to be current. Anyone have a moment to help?