code: public static byte[] decodeToBytes(InputStream in) throws IOException {
      ByteArrayOutputStream out = new ByteArrayOutputStream();
      decode(in, out, false);
      return out.toByteArray();
    }
docs: Decode Base64 encoded data from the InputStream to a byte array. Characters that are not part
  of the Base64 alphabet are ignored in the input.
  
  @param in Stream from which to read data that needs to be decoded.
  @return decoded data.
  @throws IOException if an IO error occurs.
  @since ostermillerutils 1.00.00