anchor.diff:       -H "X-Killbill-ApiKey: bob" \
        -H "X-Killbill-ApiSecret: lazar" \
        -H "Content-Type: application/json" \
  -     "http://127.0.0.1:8080/1.0/kb/accounts/0c9548f0-3c8f-41e8-abe2-966510076daf/payments"
  +     "http://127.0.0.1:8080/1.0/kb/accounts/<ACCOUNT_ID>/payments"
   ----
   
   Kill Bill will now automatically charge the user on a monthly basis. You can estimate the amount which will be billed at a future date (replace the targetDate parameter with a date in the future):
  
positive.code: * There are two plans defined: standard-free and standard-monthly. We could have just defined the latter, but we will make free users subscribe to the free plan. This is useful for reporting for example (to track how long it took to upsell them, etc.)
  * There is no trial period
  
  === Creating and retrieving subscriptions
  
  Set the following property (in conf/catalina.properties) and restart Kill Bill (make sure to update the path to your catalog):
  
  [source,xml]
  ----
  org.killbill.catalog.uri=file:///var/tmp/catalog.xml
  ----
  
  Let's try to subscribe a user to the Standard plan. This is the call that will need to be triggered from the website, when the user chooses the premium plan on the subscription checkout page (we assume the user has already an account and payment method on file, see the previous section otherwise):
  
  [source,bash]
  ----
  
negative.code: [[conclusion]]
  == Conclusion
  
  In this tutorial, we've shown you how to leverage the basic features of the Kill Bill platform, how to provide recurring and one-off billing, as well as integrate with various payment processors. Kill Bill has many more features to offer, make sure to read the http://docs.killbill.io[user guide].
  
  === Next steps: exercises for the reader
  
  If you want to continue the tutorial, here are some next steps:
  
  * Configure the overdue system. What happens when premium subscribers don't pay?
  * Setup the Analytics plugin to create revenue dashboards and monitor your MRR.
  * Defer authorize and capture: if you are shipping physical goods, you are required to defer capture only when the product ships.
  