ListDataEvent should add list-event-specifc information when it gets converted to a string.
Yeah, this just needs a paramString() method added to it. However, there are only three member variable in this class. All three of them are accessible via getter methods. The convenience of being able to do a toString() is nice here but doing it manually is an extremely viable workaround. Plus, the addition of the paramString() method will constitute an API change (for some lame reason) which is not allowed right now.