# File lib/flickr/urls.rb, line 27
        def lookupGroup(url)
                res = @flickr.call_method('flickr.urls.lookupGroup','url'=>url)
                els = res.elements
                nsid = els['/group'].attributes['id']

                g = @flickr.group_cache_lookup(nsid) ||
                        Flickr::Group.new(@flickr,nsid,
                                        els['/group/groupname'].text)
                @flickr.group_cache_store(g)
                return g
        end