src/vs/workbench/contrib/comments/browser/commentService.ts/CommentService/updateNotebookComments
class CommentService:	updateNotebookComments(ownerId: string, event: CommentThreadChangedEvent<ICellRange>): void {
		const evt: INotebookCommentThreadChangedEvent = Object.assign({}, event, { owner: ownerId });
		this._onDidUpdateNotebookCommentThreads.fire(evt);
	}