void testEnumToStringConversions() {
        // Test that enum toString methods work properly
        assertEquals("CLUSTER_WITNESS", WitnessServiceType.CLUSTER_WITNESS.toString());
        assertEquals("FILE_SERVER_WITNESS", WitnessServiceType.FILE_SERVER_WITNESS.toString());
        assertEquals("SCALE_OUT_WITNESS", WitnessServiceType.SCALE_OUT_WITNESS.toString());
        assertEquals("DFS_WITNESS", WitnessServiceType.DFS_WITNESS.toString());

    }

    @Test
    void testRegistrationCreation() {
        assertNotNull(registration.getRegistrationId());
        assertEquals("\\\\server\\share", registration.getShareName());
        assertEquals(serverAddress, registration.getServerAddress());
        assertEquals(WitnessServiceType.FILE_SERVER_WITNESS, registration.getServiceType());

    /**
     * Cluster-aware witness service for general cluster resources
     */
    CLUSTER_WITNESS,

    /**
     * Individual file server witness for standalone servers
     */
    FILE_SERVER_WITNESS,

    /**
     * Scale-out file server witness for scale-out deployments
     */
    SCALE_OUT_WITNESS,

    /**
     * DFS namespace witness for distributed file system resources
     */

        assertEquals("\\\\server\\share", registration.getShareName());
        assertEquals(serverAddress, registration.getServerAddress());
        assertEquals(WitnessServiceType.FILE_SERVER_WITNESS, registration.getServiceType());

        verify(mockRpc).register(any(WitnessRegisterRequest.class));

        client.close();
    }

    @Test
    void testFailedRegistration() throws Exception {

            try {
                // Create registration
                WitnessRegistration registration =
                        new WitnessRegistration(shareName, serverAddress, WitnessServiceType.FILE_SERVER_WITNESS);

                // Perform RPC registration
                WitnessRegisterRequest request = new WitnessRegisterRequest();
                request.setVersion(registration.getVersion().getValue());

## 3. Witness Architecture

### 3.1 Witness Service Types
```java
public enum WitnessServiceType {
    CLUSTER_WITNESS,     // Cluster-aware witness service
    FILE_SERVER_WITNESS, // Individual file server witness
    SCALE_OUT_WITNESS,   // Scale-out file server witness
    DFS_WITNESS         // DFS namespace witness
}

public enum WitnessVersion {