class PartitionedIndexReader extends AbstractIndexReader {

    @Override
    public long countIndexedNodes( long nodeId, int[] propertyKeyIds, Value... propertyValues )
    {
        return indexReaders.parallelStream()
                .mapToLong( reader -> reader.countIndexedNodes( nodeId, propertyKeyIds, propertyValues ) )
                .sum();
    }

    public  PartitionedIndexReader( List<PartitionSearcher> partitionSearchers,
            IndexDescriptor descriptor,
            IndexSamplingConfig samplingConfig,
            TaskCoordinator taskCoordinator );
      PartitionedIndexReader( IndexDescriptor descriptor, List<SimpleIndexReader> readers );

}