src/vs/workbench/contrib/notebook/browser/contrib/outline/notebookOutline.ts/NotebookOutlineCreator/createOutline
class NotebookOutlineCreator:	async createOutline(editor: NotebookEditor, target: OutlineTarget): Promise<IOutline<OutlineEntry> | undefined> {
		return this._instantiationService.createInstance(NotebookCellOutline, editor, target);
	}