assertEquals(3, result.size());
        verify(watchHandle, times(1)).call();
    }

    /**
     * Test call() method as Callable in executor service
     */
    @Test
    void testCallAsCallable() throws Exception {
        // Create a real implementation for testing Callable behavior
        SmbWatchHandle realHandle = new SmbWatchHandle() {
            private int callCount = 0;

            @Override