What's the listener with Skype Java API to get Group message? -

i search how have listener chatmessagelistener groups... use skype java api 1.6.

so want have this:

@override public void chatmessagereceived(chatmessage arg0) throws skypeexception {     ... }  @override public void chatmessagesent(chatmessage arg0) throws skypeexception {     ... } 

but it's not worked skype groups :(

so how have listeners of skype groups?