@classmethod
    @serialized
    def _cached(cls, session, sp_playlist, add_ref=True):
        if sp_playlist in session._cache:
            return session._cache[sp_playlist]
        playlist = Playlist(session, sp_playlist=sp_playlist, add_ref=add_ref)
        session._cache[sp_playlist] = playlist
        return playlist
Get :class:`Playlist` instance for the given ``sp_playlist``. If
dataset/ETHPy150Open mopidy/pyspotify/spotify/playlist.py/Playlist._cached