@Override
    public boolean equals(Object o) {
        if ( ! (o instanceof Ranking other)) return false;

        if (this.filter != other.filter) return false;
        if (this.literal != other.literal) return false;
        if (this.normal != other.normal) return false;
        return true;
    }
Returns true if the given rank settings are the same
config-model/src/main/java/com/yahoo/schema/document/Ranking.java