@property
    def vault_customer(self):
        if self.customer_details.id is None:
            return None
        return self.gateway.customer.find(self.customer_details.id)
In the case of assertFailure failing, check that we get lots of
dataset/ETHPy150Open braintree/braintree_python/braintree/transaction.py/Transaction.vault_customer--crossover with--dataset/ETHPy150Open nlloyd/SubliminalCollaborator/libs/twisted/trial/test/test_assertions.py/TestAsynchronousAssertions.test_assertFailure_moreInfo