static byte[] streamToBytes(InputStream in) ctex {
  try {
    new ByteArrayOutputStream baos;
    copyStream(in, baos);
    ret baos.toByteArray();
  } finally {
    in.close();
  }
}

static byte[] streamToBytes(InputStream in, int expectedSize) ctex {
  try {
    ByteArrayOutputStream baos = new ByteArrayOutputStream(expectedSize);
    copyStream(in, baos);
    ret baos.toByteArray();
  } finally {
    in.close();
  }
}