docs: public static AggregatePlanNode convertToPartialAggregatePlanNode(HashAggregatePlanNode hashAggregateNode,
              List<Integer> aggrColumnIdxs) {
          final AggregatePlanNode partialAggr = setAggregatePlanNode(hashAggregateNode, new PartialAggregatePlanNode());
          partialAggr.m_partialGroupByColumns = aggrColumnIdxs;
          return partialAggr;
      }