_gzIn = new GZIPInputStream(in.getInputStream());  ReadStream is = Vfs.openRead(_gzIn);
_position = 0;
  protected void init(BinaryInput in)    throws IOException  {    _in = in;        _gzIn = new GZIPInputStream(in.getInputStream());        ReadStream is = Vfs.openRead(_gzIn);    init(is);  }