src/vs/workbench/contrib/preferences/browser/settingsWidgets.ts/AbstractListSettingWidget/selectRow
class AbstractListSettingWidget:	private selectRow(idx: number): void {
		this.model.select(idx);
		this.rowElements.forEach(row => row.classList.remove('selected'));

		const selectedRow = this.rowElements[this.model.getSelected()!];

		selectedRow.classList.add('selected');
		selectedRow.focus();
	}