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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 all(self, customer_id, data={}, **kwargs):
 """" Get all tokens for given customer Id Args: customer_id : Customer Id for which tokens have to be fetched Returns: Token dicts for given cutomer Id """

        url = "{}/{}/tokens".format(self.base_url, customer_id)
        return self.get_url(url, data, **kwargs)