src/vs/base/browser/ui/scrollbar/scrollableElement.ts/SmoothScrollableElement/setScrollPosition
class SmoothScrollableElement:	public setScrollPosition(update: INewScrollPosition & { reuseAnimation?: boolean }): void {
		if (update.reuseAnimation) {
			this._scrollable.setScrollPositionSmooth(update, update.reuseAnimation);
		} else {
			this._scrollable.setScrollPositionNow(update);
		}
	}