ordinal (MusicBrainz::Client)

    /*
     * Get the ordinal (list position) of an item in a list.
     *
     * Normally used to retrieve the track number out of a list of tracks in
     * an album.
     *
     * Aliases:
     *   MusicBrainz::Client#get_ordinal
     *   MusicBrainz::Client#get_ordinal_from_list
     *
     * Examples:
     *   # get the ordinal of a track based on the URI
     *   list = mb.result MusicBrainz::Query::AlbumGetTrackList
     *   uri  = mb.result MusicBrainz::Query::AlbumGetTrackId, 5
     *   ordinal = mb.ordinal list, uri
     *
     */
    static VALUE mb_client_ordinal(VALUE self, VALUE list, VALUE uri) {