@Before
 public void setup() {
   chain = new BasicKeyChain();
   onKeysAdded = new AtomicReference<List<ECKey>>();
   onKeysAddedRan = new AtomicBoolean();
   chain.addEventListener(
       new AbstractKeyChainEventListener() {
         @Override
         public void onKeysAdded(List<ECKey> keys2) {
           onKeysAdded.set(keys2);
           onKeysAddedRan.set(true);
         }
       },
       Threading.SAME_THREAD);
 }