and
        [`@dataclasses.dataclass`](https://docs.python.org/3/library/dataclasses.html#dataclasses.dataclass)
        from the standard Python library.
    *   Extension types are supported by Keras, tf.data, TF-hub, SavedModel,
        tf.function, control flow ops, py_function, and distribution strategy.
    *   Add "dispatch decorators" that can be used to override the default