src/vs/editor/contrib/find/findWidget.ts/FindWidget/setViewState
class FindWidget:	setViewState(state?: { widgetViewZoneVisible: boolean; scrollTop: number }) {
		if (!state) {
			return;
		}

		if (state.widgetViewZoneVisible) {
			// we should add the view zone
			this._layoutViewZone(state.scrollTop);
		}
	}