## 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 {

        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());