assertNotNull(cancel);
            assertEquals(mid, cancel.getMid());
        }

        @Test
        @DisplayName("Should throw NullPointerException when config is null")
        void testNullConfigurationThrowsException() throws Exception {
            // Given
            Constructor<SmbComNtCancel> constructor = SmbComNtCancel.class.getDeclaredConstructor(Configuration.class, int.class);
            constructor.setAccessible(true);