@Test
public void isWatching() {

    group = new KeyChainGroup(
            PARAMS,
            DeterministicKey
                    .deserializeB58(
                            "xpub69bjfJ91ikC5ghsqsVDHNq2dRGaV2HHVx7Y9LXi27LN9BWWAXPTQr4u8U3wAtap8bLdHdkqPpAcZmhMS5SnrMQC4ccaoBccFhh315P4UYzo",
                            PARAMS));
    final ECKey watchingKey = ECKey.fromPublicOnly(new ECKey().getPubKeyPoint());
    group.importKeys(watchingKey);
    assertTrue(group.isWatching());
}