See also the
PaymentMethod response object.
Look up a payment method by token.
payment_method = gateway.payment_method.find("token")
If the payment method can't be found, it will throw a
If you want to look up a single PayPal account using its token, use the find method.
paypal_account = gateway.paypal_account.find("token")
If the PayPal account can't be found, it will throw a