// Then
        assertNull(splitRequest, "Cancel requests cannot be split");
    }

    @Test
    @DisplayName("Test createCancel returns null")
    void testCreateCancel() {
        // Given
        Smb2CancelRequest request = new Smb2CancelRequest(mockConfig, 1L, 0L);

        // When
        CommonServerMessageBlockRequest cancelRequest = request.createCancel();

    @Nested
    @DisplayName("Cancel Request Tests")
    class CancelRequestTests {

        @Test
        @DisplayName("createCancel should return Smb2CancelRequest with same mid and asyncId")
        void testCreateCancel() {
            long mid = 123L;
            long asyncId = 456L;
            testRequest.setMid(mid);
            testRequest.setAsyncId(asyncId);

        assertNotNull(notifyTransaction);
    }

    @Test
    @DisplayName("Test createCancel method returns SmbComNtCancel")
    void testCreateCancel() {
        // Set a MID for the transaction
        transaction.setMid(12345);

        // Create cancel request
        CommonServerMessageBlockRequest cancelRequest = transaction.createCancel();