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 };