getPlaylist method
Retrieves detailed information about a playlist given its playlist ID.
Implementation
Future<PlaylistFull> getPlaylist(String playlistId) async {
if (playlistId.startsWith("PL")) {
playlistId = "VL$playlistId";
}
final data =
await constructRequest("browse", body: {"browseId": playlistId});
return PlaylistParser.parse(data, playlistId);
}