Maybe we can come up with a cleaner solution that disabling the warning, e.g.
```
public event EventHandler Changed { add{} remove{} }
```

And setting add{} to throw some exception that the event is not implemented / fired yet. Disabling the warning may make it difficult to find some problem concerning the event.

I'm not sure if this solves the issue which led to the decision to suppress the event. For reference, here is the SO discussion that introduced the suggested solution:
http://stackoverflow.com/questions/1093315/how-do-i-get-rid-of-some-event-never-used-compiler-warnings-in-visual-studio