assertEquals("VERSION_1", WitnessVersion.VERSION_1.toString());
        assertEquals("VERSION_2", WitnessVersion.VERSION_2.toString());

        assertEquals("RESOURCE_CHANGE", WitnessEventType.RESOURCE_CHANGE.toString());
        assertEquals("CLIENT_MOVE", WitnessEventType.CLIENT_MOVE.toString());
        assertEquals("SHARE_MOVE", WitnessEventType.SHARE_MOVE.toString());

    }

    @Test
    void testMockServiceNotifications() {
        // Test notification sending (just logs for mock)
        mockService.sendNotification(WitnessEventType.RESOURCE_CHANGE, "TestResource");

        // Register a witness first
        String regId = mockService.registerWitness("TestResource", "192.168.1.100", 1);

        // Send notification affecting the registration

 * can be notified about.
 */
public enum WitnessEventType {
    /**
     * Resource state changed - general resource state modification
     */
    RESOURCE_CHANGE(1),

    /**
     * Client should move to different node - directed failover
     */
    CLIENT_MOVE(2),

    /**
     * Share moved to different node - share mobility event
     */
    SHARE_MOVE(3),

        }
    }

    @Test
    void testTimestampConsistency() {
        long beforeCreation = System.currentTimeMillis();
        WitnessNotification newNotification = new WitnessNotification(WitnessEventType.RESOURCE_CHANGE, "TestResource");
        long afterCreation = System.currentTimeMillis();

        assertTrue(newNotification.getTimestamp() >= beforeCreation);
        assertTrue(newNotification.getTimestamp() <= afterCreation);

        switch (messageType) {
        case WitnessAsyncNotifyMessage.WitnessNotificationMessage.WITNESS_RESOURCE_CHANGE:
            return WitnessEventType.RESOURCE_CHANGE;
        case WitnessAsyncNotifyMessage.WitnessNotificationMessage.WITNESS_CLIENT_MOVE:
            return WitnessEventType.CLIENT_MOVE;
        case WitnessAsyncNotifyMessage.WitnessNotificationMessage.WITNESS_SHARE_MOVE:

        this.version = version;
    }
    
    public int getValue() { return version; }
}
```

### 3.2 Witness Event Types
```java
public enum WitnessEventType {
    RESOURCE_CHANGE(1),        // Resource state changed
    CLIENT_MOVE(2),           // Client should move to different node
    SHARE_MOVE(3),            // Share moved to different node
    IP_CHANGE(4),             // IP address changed

        log.info("Handling witness event: {} for resource: {}", notification.getEventType(), notification.getResourceName());

        switch (notification.getEventType()) {
        case RESOURCE_CHANGE:
            handleResourceChange(notification);
            break;

        case CLIENT_MOVE:
            handleClientMove(notification);
            break;

        case SHARE_MOVE: