private void copyBlock(DataBlock block, Path file, FileChannel fc) throws IOException {
        try (FileChannel fcOut = FileChannel.open(file, CREATE, WRITE)) {
            fc.transferTo(block.offset(), block.length(), fcOut);
        }
    }
@author Nico Bergemann <barracuda415 at yahoo.de>
disunity-cli/src/main/java/info/ata4/disunity/cli/command/asset/AssetUnpack.java