0xe2, 0x67, 0xb, 0x1e, 0xae, 0x69, 0xe1, 0x18, 0xcb, 0x99, 0x46, 0x9a, 0x2c, 0x20, 0xbd, 0x6b, 0x1e, 0x33, 0xe, 0xcd, 0xe, 0xd2, 0x81, 0x5e, 0xaf, 0xe, 0x36, 0x1b, 0x57, 0x45, 0x1d, 0x1c, 0x10, 0x58, 0xea, 0x9f, 0xcd, 0x52, 0x4, 0x88, 0x18, 0x8e, 0x78, 0x51, 0x66, 0x46, 0xd4, 0x8d, 0x1f, 0x35, 0x26, 0x97, 0xa9, 0xd0, 0x81, 0x72, 0xe3, 0x22, 0xd0, 0xbe, 0x44, 0x1f, 0xac, 0xdb, 0x60, 0xea, 0x6e, 0xe, 0x83, 0xf7, 0xa2, 0x6, 0xda, 0x84, 0xc4, 0xd8, 0x23, 0x5b, 0x53, 0xca, 0x50, 0xb0, 0x14, 0x67, 0x89, 0x9b,...

        assertTrue(result.contains("Valid XML text 123"));
    }

    public void test_stripInvalidXMLCharacters_withInvalidChars() {
        // Test with invalid control characters (0x1-0x8, 0xB, 0xC, 0xE-0x1F)
        String input = "Test\u0001\u0002\u0008Valid\u000B\u000C\u000EText";
        String result = XmlUtil.stripInvalidXMLCharacters(input);
        assertEquals("TestValidText", result);
    }