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