code: public AttributeDataset range(int from, int to) {
          AttributeDataset sub = new AttributeDataset(name+'['+from+", "+to+']', attributes, response);
          sub.description = description;
  
          for (int i = from; i < to; i++) {
              sub.add(get(i));
          }
  
          return sub;
      }
docs: Returns the rows in the given range [from, to).