code: public boolean mergeIn(final BatchPoints that) {
      boolean mergeAble = isMergeAbleWith(that);
      if (mergeAble) {
        this.points.addAll(that.points);
      }
      return mergeAble;
    }
docs: Merge two BatchPoints objects.
  
  @param that batch point to merge in
  @return true if the batch points have been merged into this BatchPoints instance. Return false otherwise.