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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def list_cards(self, *args, **kwargs):
 """ List the cards of the customer. :param page: the page number :type page: int|None :param per_page: number of customers per page. It's a good practice to increase this number if you know that you will need a lot of payments. :type per_page: int|None :return: The cards of the customer :rtype APIResourceCollection """

        return payplug.Card.list(self, *args, **kwargs)