anchor.diff:  
   <pre class="terminal">
   $ cf service-brokers
  -Getting service brokers as admin...
  +Getting service brokers as admin...Cloud Controller
   OK
   
   Name            URL
  
positive.code: 
  Updating a broker is how to ingest changes a broker author has made into Cloud
  Foundry.
  Similar to adding a broker, update causes cloud controller to fetch the catalog
  from a broker, validate it, and update the cloud controller database with any
  changes found in the catalog.
  
  Update also provides a means to change the basic auth credentials cloud
  
negative.code: 
  If a service broker has been shut down or removed without first deleting service instances from Cloud Foundry, you will be unable to remove the service broker or its services and plans from the Marketplace. In development environments, broker authors often destroy their broker deployments and need a way to clean up the Cloud Controller database.
  
  The following command will delete a service offering, all of its plans, as well as all associated service instances and bindings from the Cloud Controller database, without making any API calls to a service broker. For services from v1 brokers, you must provide a provider with `-p PROVIDER`. Once all services for a broker have been purged, the broker can be removed normally.
  
  <pre class="terminal">
  $ cf purge-service-offering v1-test -p pivotal-software
  