OptionalplaylistIndex of the playlist; omitted, the active playlist.
OptionalplaylistPersistent unique identifier of a playlist, used in place of an index. For read queries where a missing target returns an empty result instead of failing. Mutually exclusive with playlist; passing both or an invalid format fails with INVALID_PARAMS.
Parameters for
playlist.getTrackCount. Report how many tracks a playlist holds. An index past the last playlist, aplaylistGuidno playlist has, or no active playlist when both are omitted, reports0rather than failing.