OptionalcontentPages can be joined only when this matches; absent when the playlist does not exist.
Rows returned.
The playlist read, as given or resolved. -1 when there is none to name: playlist was omitted and there is no active playlist, or no playlist has the playlistGuid. An index past the last playlist comes back as given.
OptionalplaylistGUID of the playlist read, as playlistGuid takes it; absent when the playlist does not exist, so its absence is what tells a missing playlist from an empty one.
The start applied.
Always true here; a failed call resolves with ApiFailure instead.
Rows in the playlist; 0 when it does not exist.
The rows from start: whole rows, or index plus the fields asked for.
Successful response from
playlist.getTracks.