'See :py:meth `xmodule.modulestore.split_mongo.split.SplitMongoModuleStore.get_block_generations`'

def get_block_generations(self, block_locator):

    block_locator = self._map_revision_to_branch(block_locator)
    return super(DraftVersioningModuleStore, self).get_block_generations(block_locator)
