How to use the forbiddenfruit.__init__.SlotsProxy function in forbiddenfruit

def patchable_builtin(klass):
    name = klass.__name__
    target = klass.__dict__

    proxy_dict = SlotsProxy.from_address(id(target))
    namespace = {}

    # This code casts `proxy_dict.dict` into a python object and
    # `from_address()` returns `py_object`
    ctypes.pythonapi.PyDict_SetItem(
        ctypes.py_object(namespace),
        ctypes.py_object(name),
        proxy_dict.dict,
    )
    return namespace[name]