/* * Extract the actual artist/album/track ID from a MBE_GetxxxxxId query. * * The MBE_GETxxxxxId queries return a URL where additional RDF metadata * for a given ID can be retrieved. Callers may wish to extract only * the ID of an artist/album/track for reference. * * Aliases: * MusicBrainz::Client#get_id_from_url * * Examples: * # get the artist name of the first track on the album * url = mb.result MusicBrainz::Query::AlbumGetArtistId, 1 * id = mb.id_from_url url * */ static VALUE mb_client_id_from_url(VALUE self, VALUE url) {