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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 order(self):
 """Return the order for this payment. """

        from ..resources.orders import Order
        url = self._get_link('order')
        if url:
            resp = self.client.orders.perform_api_call(self.client.orders.REST_READ, url)
            return Order(resp, self.client)