src/vs/base/browser/ui/list/listWidget.ts/MouseController/isSelectionSingleChangeEvent
class MouseController:	protected isSelectionSingleChangeEvent(event: IListMouseEvent<any> | IListTouchEvent<any>): boolean {
		if (!this.multipleSelectionController) {
			return false;
		}

		return this.multipleSelectionController.isSelectionSingleChangeEvent(event);
	}