thisSampleNumUnmappedReads);
perSampleArtificialReadStreams.put(sampleName, thisSampleStream);
perSampleStreamAnalyzers.put(sampleName, new PositionallyDownsampledArtificialSingleSampleReadStreamAnalyzer(thisSampleStream, targetCoverage));
}
mergedReadStream = new ArtificialMultiSampleReadStream(perSampleArtificialReadStreams.values());
}