}
@Override
protected Siren10BlockStreamFactory getFactory() {
final Siren10BlockStreamFactory factory = new Siren10BlockStreamFactory(blockSize);
factory.setDocsBlockCompressor(new VIntBlockCompressor());
factory.setFreqBlockCompressor(new VIntBlockCompressor());
factory.setNodBlockCompressor(new VIntBlockCompressor());
factory.setPosBlockCompressor(new VIntBlockCompressor());
factory.setDocsBlockDecompressor(new VIntBlockDecompressor());
factory.setFreqBlockDecompressor(new VIntBlockDecompressor());
factory.setNodBlockDecompressor(new VIntBlockDecompressor());
factory.setPosBlockDecompressor(new VIntBlockDecompressor());
return factory;