assertTrue(notification.getTimestamp() <= System.currentTimeMillis());
        assertTrue(notification.getNewIPAddresses().isEmpty());
        assertTrue(notification.getOldIPAddresses().isEmpty());
        assertEquals(WitnessNotification.WITNESS_RESOURCE_STATE_UNKNOWN, notification.getFlags());
    }

    @Test
    void testAddIPAddresses() throws Exception {

        return newIPAddresses;
    }

    /**
     * Gets the list of old IP addresses.
     *
     * @return the old IP addresses
     */
    public List<WitnessIPAddress> getOldIPAddresses() {
        return oldIPAddresses;
    }

    /**
     * Gets the notification flags.
     *
     * @return the flags
     */
    public int getFlags() {
        return flags;
    }

    public long getTimestamp() { return timestamp; }
    public List<WitnessIPAddress> getNewIPAddresses() { return newIPAddresses; }
    public List<WitnessIPAddress> getOldIPAddresses() { return oldIPAddresses; }
}
```

### 4.3 Witness Client
```java
package jcifs.internal.witness;

import jcifs.dcerpc.*;
import jcifs.dcerpc.rpc.*;
import java.util.concurrent.*;