[Opensymphony-oscache] Questions about AbstractBroadcastingListener

Hi, 

I am currently looking at clustering in AbstractBroadcastingListener and have a few questions:
- AbstractBroadcastingListener has some methods that I cannot explain: cacheGroupAdded, cacheGroupEntryAdded, cacheGroupEntryRemoved, cacheGroupRemoved, cacheGroupUpdated. How are these called? Or are these obsolete methods?
- In what case is a cacheEntry removed? If i track back the use of AbstractBroadcastingListener.cacheEntryRemoved then I end up in Cache.removeEntry(String key) and Eclipse tells me that this method is never called. Is this true or am i missing a path?

Thanks,
Rintcius

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