src/vs/editor/browser/view.ts/View/layoutOverlayWidget
class View:	public layoutOverlayWidget(widgetData: IOverlayWidgetData): void {
		const newPreference = widgetData.position ? widgetData.position.preference : null;
		const shouldRender = this._overlayWidgets.setWidgetPosition(widgetData.widget, newPreference);
		if (shouldRender) {
			this._scheduleRender();
		}
	}