如何在棉花糖中人工嵌套模式?

在棉花糖中,有没有方法将当前对象传递给 Nested 字段以生成人工嵌套序列化?例如,考虑我正在序列化的对象:

example = Example(
    name="Foo",
    address="301 Elm Street",
    city="Kalamazoo",
    state="MI",
)

我想为这个生成如下所示的JSON:

{
    "name": "Foo",
    "address": {
            "street": "301 Elm Street",
            "city": "Kalamazoo",
            "state": "MI"
    }
}

AddressSchema 在里面 ExampleSchema ,就像这样:

class AddressSchema:
    street = fields.String(attribute="address")
    city = fields.String()
    state = fields.String()

class ExampleSchema:
    name = fields.String()
    address = fields.Nested(AddressSchema)