private void sendAuthorizationToServer(PayPalAuthorization authorization) {
/**
* TODO: Send the authorization response to your server, where it can
* exchange the authorization code for OAuth access and refresh tokens.
*
* Your server must then store these tokens, so that your server code
* can execute payments for this user in the future.
*
* A more complete example that includes the required app-server to
* PayPal-server integration is available from
* https://github.com/paypal/rest-api-sdk-python/tree/master/samples/mobile_backend
*/
}