private CountingInputStream lzmaInputStream() throws IOException {
        in.position(bundle.header().headerSize());
        return new CountingInputStream(new LzmaInputStream(in.stream()));
    }
Streaming reader for Unity asset bundles.

@author Nico Bergemann <barracuda415 at yahoo.de>
disunity-core/src/main/java/info/ata4/junity/bundle/BundleReader.java