String expected = "test string";
        Object obj = expected;
        String result = ASN1Util.as(String.class, obj);
        assertSame(expected, result);
    }

    @Test
    void testAs_Object_Failure() {
        // Test failed casting
        Object obj = 123; // Integer
        assertThrows(PACDecodingException.class, () -> {
            ASN1Util.as(String.class, obj);