How to use the localstripe.resources.Card function in localstripe

def _api_retrieve(cls, id):
        # https://stripe.com/docs/payments/payment-methods#transitioning
        # You can retrieve all saved compatible payment instruments through the
        # Payment Methods API.
        if id.startswith('card_'):
            return Card._api_retrieve(id)
        elif id.startswith('src_'):
            return Source._api_retrieve(id)

        return super()._api_retrieve(id)

raise UserError(400, 'Bad request')

        obj = cls._api_retrieve(id)

        if type(source) is str and source.startswith('src_'):
            source_obj = Source._api_retrieve(source)
        elif type(source) is str and source.startswith('tok_'):
            source_obj = Token._api_retrieve(source).card
        else:
            source_obj = Card(source=source)

        if source_obj._attaching_is_declined():
            raise UserError(402, 'Your card was declined.',
                            {'code': 'card_declined'})

        if isinstance(source_obj, Card):
            source_obj.customer = id

        obj.sources._list.append(source_obj)

        if obj.default_source is None:
            obj.default_source = source_obj.id

        schedule_webhook(Event('customer.source.created', source_obj))

        return source_obj

try:
            if type(source) is str:
                assert source[:4] in ('src_', 'tok_')
            else:
                assert type(source) is dict
        except AssertionError:
            raise UserError(400, 'Bad request')

        obj = cls._api_retrieve(id)

        if type(source) is str and source.startswith('src_'):
            source_obj = Source._api_retrieve(source)
        elif type(source) is str and source.startswith('tok_'):
            source_obj = Token._api_retrieve(source).card
        else:
            source_obj = Card(source=source)

        if source_obj._attaching_is_declined():
            raise UserError(402, 'Your card was declined.',
                            {'code': 'card_declined'})

        if isinstance(source_obj, Card):
            source_obj.customer = id

        obj.sources._list.append(source_obj)

        if obj.default_source is None:
            obj.default_source = source_obj.id

        schedule_webhook(Event('customer.source.created', source_obj))

        return source_obj

def __init__(self, card=None, customer=None, **kwargs):
        if kwargs:
            raise UserError(400, 'Unexpected ' + ', '.join(kwargs.keys()))

        try:
            assert type(card) is dict
            if customer is not None:
                assert type(customer) is str and customer.startswith('cus_')
        except AssertionError:
            raise UserError(400, 'Bad request')

        # If this raises, abort and don't create the token
        card['object'] = 'card'
        card_obj = Card(source=card)
        if customer is not None:
            card_obj.customer = customer

        # All exceptions must be raised before this point.
        super().__init__()

        self.type = 'card'
        self.card = card_obj