public boolean useSignificanceModel() {
        if (useSignificanceModel != null) return useSignificanceModel;
        return uniquelyInherited(RankProfile::useSignificanceModel, "use-model")
                .orElse(false); // Disabled by default
    }
Returns the strict value declared in this or any parent profile.
config-model/src/main/java/com/yahoo/schema/RankProfile.java