Generated Java model class misses toString()

Hope this is the right place to post. I'm generating the Java App Engine backend client libraries in Android Studio with your latest SDK/Plugin. The Object generated says: "This code was generated by https://github.com/google/apis-client-generator/

• (build: 2015-11-16 19:10:01 UTC)"

The backend source is very simple, simplified it event more :

@entity
public class Event {

@id
@GeneratedValue(strategy=GenerationType.IDENTITY)

private String eventName;

@OverRide
public String toString(){
return eventName;
}

However, in the file "generated-source" > "eventendpoint" > "model" > "Event.java"
the function toString() does not exist. Calling it on the Object calls of course Object.toString().
Is there any other explanation to this, other then a defect ?