class DataStatistics implements Iterable<DataStatistics.RelationshipTypeCount> {

    public synchronized Client newClient()
    {
        Client client = new Client();
        clients.add( client );
        opened++;
        return client;
    }

    public  DataStatistics( long nodeCount, long propertyCount, RelationshipTypeCount[] sortedTypes );
    public  DataStatistics( DataImporter.Monitor entityCounts, RelationshipTypeCount[] sortedTypes );

}