// Verify notification was delivered
        assertTrue(listener.waitForNotification(1000));
        assertNotNull(listener.getLastNotification());
        assertEquals(WitnessEventType.CLIENT_MOVE, listener.getLastNotification().getEventType());

        client.close();
    }

    @Test
    void testUnregistration() throws Exception {
        // Setup successful registration

    public K getLastEvictedKey() {
      return lastNotification.getKey();
    }

    public V getLastEvictedValue() {
      return lastNotification.getValue();
    }

    public RemovalNotification<K, V> getLastNotification() {
      return lastNotification;
    }
  }

  /** No-op {@link RemovalListener}. */
  static class NullRemovalListener<K, V> implements RemovalListener<K, V> {
    @Override