assertThrows(StackOverflowError.class, () -> {
            ASN1Util.as(ASN1Integer.class, sequence, 0);
        }, "Should throw StackOverflowError due to recursive call");
    }

    // --- readUnparsedTagged ---

    @Test
    void testReadUnparsedTagged_Success() throws IOException {
        // Tag [1] IMPLICIT, content is 0x01 0x02 0x03
        byte[] data = new byte[] { (byte) 0xA1, 0x03, 0x01, 0x02, 0x03 };

            throw new PACDecodingException("Empty kerberos token");
        }

        byte[] content;
        try (ASN1InputStream stream = new ASN1InputStream(token)) {
            content = ASN1Util.readUnparsedTagged(0, 0x8000, stream);
        } catch (IOException e) {
            throw new PACDecodingException("Malformed kerberos token", e);
        }

        try (ASN1InputStream stream = new ASN1InputStream(content)) {

     * @param in the ASN.1 input stream
     * @return coded bytes of the tagged object
     * @throws IOException if reading fails or tag mismatch
     */
    public static byte[] readUnparsedTagged(final int expectTag, final int limit, final ASN1InputStream in) throws IOException {
        final int ftag = in.read();
        final int tag = readTagNumber(in, ftag);
        if (tag != expectTag) {