According to Lars, this method is being removed from the Filter interface in 0.94.6 (apparently it was added and then realized that it would break b/w compat, so now they're removing it - hey wait - that can't be good for b/w compat either :-)).

Anyway, iInstead of implementing Filter, can you derive from FilterBase? Then on the client, do a ScanUtil.andFilter(scan, filter)? I think that's semantically the same as what you're doing.