code: func (b *RWSetBuilder) AddToRangeQuerySet(ns string, rqi *kvrwset.RangeQueryInfo) {
  	nsPubRwBuilder := b.getOrCreateNsPubRwBuilder(ns)
  	key := rangeQueryKey{rqi.StartKey, rqi.EndKey, rqi.ItrExhausted}
  	_, ok := nsPubRwBuilder.rangeQueriesMap[key]
  	if !ok {
  		nsPubRwBuilder.rangeQueriesMap[key] = rqi
  		nsPubRwBuilder.rangeQueriesKeys = append(nsPubRwBuilder.rangeQueriesKeys, key)
  	}
  }
docs: // AddToRangeQuerySet adds a range query info for performing phantom read validation