docs: private List<Integer> getNodeIdListForPartitionIdList(List<Integer> partitionIds)
              throws VoldemortException {
          List<Integer> nodeIds = new ArrayList<Integer>(partitionIds.size());
          for(Integer partitionId: partitionIds) {
              int nodeId = getNodeIdForPartitionId(partitionId);
              if(nodeIds.contains(nodeId)) {
                  throw new VoldemortException("Node ID " + nodeId + " already in list of Node IDs.");
              } else {
                  nodeIds.add(nodeId);
              }
          }
          return nodeIds;
      }