@Test
    void testMultipleRegistrations() {
        // Register multiple witnesses
        String reg1 = mockService.registerWitness("\\\\server1\\share1", "192.168.1.100", 1);
        String reg2 = mockService.registerWitness("\\\\server2\\share2", "192.168.1.101", 1);
        String reg3 = mockService.registerWitness("\\\\server3\\share3", "192.168.1.102", 1);

        assertEquals(3, mockService.getRegistrationCount());

     *
     * @param shareName the share name
     * @param serverAddress the server address
     * @param flags the registration flags
     * @return the registration ID
     */
    public String registerWitness(String shareName, String serverAddress, int flags) {
        String registrationId = "MOCK-REG-" + registrationCounter.incrementAndGet();