public void getConfig(SummaryConfig.Builder builder) {
        // Replace
        builder.defaultsummaryid(summaries.isEmpty() ? -1 : summaries.get(0).hashCode());
        builder.usev8geopositions(useV8GeoPositions);
        builder.classes(summaries.stream().map(SummaryClass::getSummaryClassConfig).toList());
    }
A list of derived summaries

@author  bratseth
config-model/src/main/java/com/yahoo/schema/derived/Summaries.java