Serde.SerializeBox is a box that holds a value, and its ISerialize<T> serialize object together. It offers a replacement for APIs in other serializers that store a simple object field and then serialize the runtime type of the object.

Usually types have both an ISerializeProvider<T> and an ISerialize<T> implementation. However, ISerializeProvider<T> has static methods, so it cannot be boxed. This makes ISerialize<T> alone an advanced scenario. To use it correctly, you'll have to pass it as both the value and the serialize object. For example, with JsonSerializer:

var list = new List<string> { "a", "b", "c" };
var box = SerializeBox.Create(list, ListProxy.Ser<string, StringProxy>.Instance);
var result = JsonSerializer.Serialize(box, box); // pass 'box' twice