class AggregationDistinctQueryResult extends DistinctQueryResult {

    @Override
    public boolean wasNull() {
        return null == getCurrentRow();
    }

    private  AggregationDistinctQueryResult(final QueryResultMetaData queryResultMetaData, final Iterator<QueryRow> resultData, final AggregationDistinctQueryMetaData distinctQueryMetaData);
    public  AggregationDistinctQueryResult(final Collection<QueryResult> queryResults, final List<AggregationDistinctSelectItem> aggregationDistinctSelectItems);

}