anchor.diff:  The entry point must always be set to `io.quarkus.gcp.functions.QuarkusBackgroundFunction` as this is the class that integrates Cloud Functions with Quarkus.
   ====
   
  +To trigger the event, you can send a file to the GCS `quarkus-hello` bucket or you can use gcloud to simulate one:
  +
  +[source]
  +----
  +gcloud functions call quarkus-example-storage  --data '{"name":"test.txt"}'
  +----
  +
  +NOTE: `--data` contains the GCS event, it is a JSON document with the name of the file added to the bucket.
  +
   === The RawBackgroundFunction
   
   This is an example command to deploy your `RawBackgroundFunction` to Google Cloud, as the function is triggered by a PubSub event,
  
positive.code:     -Dextensions="google-cloud-functions"
  ----
  
  == Login to Google Cloud
  
  Login to Google Cloud is necessary for deploying the application and it can be done as follows:
  
negative.code: curl localhost:8080 -d '{"data":{"greeting":"world"}}'
  ----
  
  This will call your PubSub background function with a PubSubMessage `{"greeting":"world"}`.
  