src/vs/workbench/contrib/notebook/browser/notebookEditorWidget.ts/ListViewInfoAccessor/getVisibleRangesPlusViewportAboveBelow
class ListViewInfoAccessor:	getVisibleRangesPlusViewportAboveBelow(): ICellRange[] {
		return this.list?.getVisibleRangesPlusViewportAboveBelow() ?? [];
	}