// When/Then - All error codes should have high bit set (0xC prefix)
        for (int status : errorStatuses) {
            assertTrue((status & (int) 0xC0000000L) == (int) 0xC0000000L,
                    "Error status should have severity bits set to 0xC: " + Integer.toHexString(status));
        }
    }

    @Test
    @DisplayName("Should have status codes array")

        assertEquals(0xB, PacConstants.CONSTRAINT_DELEGATIION_TYPE, "CONSTRAINT_DELEGATIION_TYPE should be 0xB");
        assertEquals(0xC, PacConstants.CLIENT_UPN_TYPE, "CLIENT_UPN_TYPE should be 0xC");
        assertEquals(0xD, PacConstants.CLIENT_CLAIMS_TYPE, "CLIENT_CLAIMS_TYPE should be 0xD");
        assertEquals(0xE, PacConstants.DEVICE_INFO_TYPE, "DEVICE_INFO_TYPE should be 0xE");

    /**
     * Buffer type for constrained delegation information.
     */
    int CONSTRAINT_DELEGATIION_TYPE = 0xB;
    /**
     * Buffer type for client user principal name.
     */
    int CLIENT_UPN_TYPE = 0xC;
    /**
     * Buffer type for client claims information.
     */
    int CLIENT_CLAIMS_TYPE = 0xD;
    /**
     * Buffer type for device information.
     */
    int DEVICE_INFO_TYPE = 0xE;
    /**

	var testData [256]byte

  STREAM_CLOSED(5),

  FRAME_SIZE_ERROR(6),

  REFUSED_STREAM(7),

  CANCEL(8),

  COMPRESSION_ERROR(9),

  CONNECT_ERROR(0xa),

  ENHANCE_YOUR_CALM(0xb),

  INADEQUATE_SECURITY(0xc),

  HTTP_1_1_REQUIRED(0xd),
  ;

  companion object {
    fun fromHttp2(code: Int): ErrorCode? = values().find { it.httpCode == code }
  }

0x32, 0xf4, 0x12, 0x5e, 0x9f, 0x70, 0x2, 0xfc, 0x64, 0xa9, 0x86, 0x94, 0x52, 0xe6, 0x99, 0x33, 0x92, 0xc, 0xd, 0xba, 0x9, 0x80, 0x70, 0x97, 0x3a, 0x47, 0x58, 0x38, 0x36, 0xb6, 0x6a, 0x6a, 0xc, 0xb8, 0xe1, 0xf8, 0x4c, 0x1e, 0x26, 0x82, 0x4, 0x6c, 0x5c, 0x9a, 0x91, 0x6, 0x48, 0xce, 0xe5, 0xd0, 0x9a, 0x7a, 0x51, 0xaa, 0xa7, 0x6a, 0x5, 0xc, 0xd4, 0x92, 0x27, 0xb0, 0x61, 0x6c, 0xe5, 0xda, 0x6a, 0x7c, 0x4c, 0xc, 0x9e, 0xb1, 0xa4, 0x78, 0xb1, 0x9c, 0xf1, 0x7f, 0x26, 0xba, 0xe4, 0x4f, 0x5c, 0x6d, 0x4, 0xb3, 0x50,...

0x32, 0xf4, 0x12, 0x5e, 0x9f, 0x70, 0x2, 0xfc, 0x64, 0xa9, 0x86, 0x94, 0x52, 0xe6, 0x99, 0x33, 0x92, 0xc, 0xd, 0xba, 0x9, 0x80, 0x70, 0x97, 0x3a, 0x47, 0x58, 0x38, 0x36, 0xb6, 0x6a, 0x6a, 0xc, 0xb8, 0xe1, 0xf8, 0x4c, 0x1e, 0x26, 0x82, 0x4, 0x6c, 0x5c, 0x9a, 0x91, 0x6, 0x48, 0xce, 0xe5, 0xd0, 0x9a, 0x7a, 0x51, 0xaa, 0xa7, 0x6a, 0x5, 0xc, 0xd4, 0x92, 0x27, 0xb0, 0x61, 0x6c, 0xe5, 0xda, 0x6a, 0x7c, 0x4c, 0xc, 0x9e, 0xb1, 0xa4, 0x78, 0xb1, 0x9c, 0xf1, 0x7f, 0x26, 0xba, 0xe4, 0x4f, 0x5c, 0x6d, 0x4, 0xb3, 0x50,...

        assertEquals(0x3, combined);

        combined = SecurityInfo.DACL_SECURITY_INFO | SecurityInfo.SACL_SECURITY_INFO;
        assertEquals(0xC, combined);

        // Test all standard security info combined
        int allStandard = SecurityInfo.OWNER_SECURITY_INFO | SecurityInfo.GROUP_SECURITY_INFO | SecurityInfo.DACL_SECURITY_INFO

        assertNotNull(result);
        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);
    }

      dest[5] = upperHexDigits[cp & 0xF];
      cp >>>= 4;
      dest[4] = upperHexDigits[0x8 | (cp & 0x3)];
      cp >>>= 2;
      dest[2] = upperHexDigits[cp & 0xF];
      cp >>>= 4;
      dest[1] = upperHexDigits[0xC | cp];
      return dest;
    } else if (cp <= 0xffff) {
      // Three byte UTF-8 characters [cp >= 0x800 && cp <= 0xffff]
      // Start with "%E-%--%--" and fill in the blanks
      char[] dest = new char[9];