public double getRankScoreDropLimit() {
        if (rankScoreDropLimit > -Double.MAX_VALUE) return rankScoreDropLimit;
        return uniquelyInherited(RankProfile::getRankScoreDropLimit, c -> c > -Double.MAX_VALUE, "rank.score-drop-limit")
                .orElse(rankScoreDropLimit);
    }
Whether we should ignore the default rank features. Set to null to use inherited
config-model/src/main/java/com/yahoo/schema/RankProfile.java