src/vs/workbench/contrib/notebook/browser/view/notebookCellList.ts/NotebookCellList/focusNext
class NotebookCellList:	override focusNext(n: number | undefined, loop: boolean | undefined, browserEvent?: UIEvent, filter?: (element: CellViewModel) => boolean): void {
		this._focusNextPreviousDelegate.onFocusNext(() => {
			super.focusNext(n, loop, browserEvent, filter);
		});
	}