sLogger.info(" - CollectionDocumentCount: " + docCount);
sLogger.info(" - AverageDocumentLenght: " + avgdl);
RetrievalEnvironment env = new RetrievalEnvironment(dataOutputPath, fs);
env.writeCollectionAverageDocumentLength(avgdl);
env.writeCollectionLength(collectionLength);
env.writeCollectionDocumentCount(docCount);
return 0;
}