code: func (qe *UpdateBatchBackedQueryExecuter) GetStateRangeScanIterator(namespace, startKey, endKey string) (statedb.ResultsIterator, error) {
  	return qe.UpdateBatch.GetRangeScanIterator(namespace, startKey, endKey), nil
  }
docs: // GetStateRangeScanIterator implements function in interface 'queryExecuter'