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 `hello_topic` topic of you can use gcloud to simulate one:
  +
  +[source]
  +----
  +gcloud functions call quarkus-example-pubsub --data '{"data":{"greeting":"world"}}'
  +----
  +
   == Testing locally
   
   The easiest way to locally test your function is using the Cloud Function invoker JAR.
  
positive.code:     @Override
      public void accept(String event, Context context) throws Exception { // <5>
          System.out.println("PubSub event: " + event);
          System.out.println("Be polite, say" + greetingService.hello());
      }
  }
  ----
  
negative.code:     @Override
      public void accept(StorageEvent event, Context context) throws Exception { // <5>
          System.out.println("Receive event: " + event);
          System.out.println("Be polite, say " + greetingService.hello());
      }
  
      //
  