code: public void combine(@NonNull EnhancedDoubleStatistics other) {
        count += other.count;
        sum += other.sum;
        sumOfSq += other.sumOfSq;
        min = Math.min(min, other.min);
        max = Math.max(max, other.max);
     }
docs: <p>Adds the statistics collected by another EnhancedDoubleStatistics object</p>
  
  @param other the other EnhancedDoubleStatistics to combine
  @throws NullPointerException if the other EnhancedDoubleStatistics is null