addOperationStatus.waitForCompletion();
TrackCollection newTracks = new TrackCollection(this, addOperationStatus.getTracks());
this.addTracks(newTracks);
return newTracks;
} catch (PlaylistReadOnlyException e) {
throw new UserLibraryReadOnly(this);
} catch (PlaylistDeletedException e) {
throw new ITObjectDeletedError(this);
}
}