public Map<String, DocumentSummary> getSummaries() {
        // Shortcuts
        if (inherited.isEmpty()) return summaries;
        if (summaries.isEmpty()) return requireInherited().getSummaries();

        var allSummaries = new LinkedHashMap<>(requireInherited().getSummaries());
        allSummaries.putAll(summaries);
        return allSummaries;
    }
Summaries defined by fields of this search definition. The default summary, named "default", is always the first
one in the returned iterator.
config-model/src/main/java/com/yahoo/schema/Schema.java