[Zope-dev] New IOBTrees have no 'map' method

Hi, I was going to have the next version of Squishdot use the new BTrees, but it appears that the new objects don't have the same methods as the old ones. In particular, the following line from Squishdot: return map(lambda x, p=self: x.__of__(p), self.data.map(self.site_id_list(currtime))) ...fails with an attribute error on map. self.data is an IOBTree. Any ideas? cheers, Chris