# File lib/flickr/photosets.rb, line 98
        def orderSets(photosets)
                photosets=photosets.map { |ps|
                        (ps.class==Flickr::PhotoSet) ? ps.id : ps}.join(',')
                @flickr.call_method('flickr.photosets.orderSets',
                                'photoset_ids' => photosets)
        end