def handler(init, exposes, version=None):
return StorableHandler(poke=poke(exposes), peek=peek(init, exposes), version=version)<EOL>
Simple handler with default `peek` and `poke` procedures.

Arguments:

    init (callable): type constructor.

    exposes (iterable): attributes to be (de-)serialized.

    version (tuple): version number.

Returns:

    StorableHandler: storable handler.