### Question:
BackupDelegator extends LifecycleAdapter { @Override public void start() { catchUpClient.start(); } BackupDelegator( RemoteStore remoteStore, CatchUpClient catchUpClient, StoreCopyClient storeCopyClient ); @Override void start(); @Override void stop(); StoreId fetchStoreId( AdvertisedSocketAddress fromAddress );  }### Answer:
@Test public void startDelegatesToCatchUpClient() { subject.start(); verify( catchUpClient ).start(); }