DefaultMetaChangeManager implements MetaChangeManager { @Override public DcMetaChangeManager getOrCreate(String dcId) { return MapUtils.getOrCreate(dcMetaChangeManagers, dcId, new ObjectFactory<DcMetaChangeManager>() { @Override public DcMetaChangeManager create() { return new DefaultDcMetaChangeManager(instanceManager); } }); }  @Override void start(); @Override void stop(); @Override DcMetaChangeManager getOrCreate(String dcId); @Override void ignore(String dcId); @Override void startIfPossible(String dcId);  }
@Test public void testGetOrCreate() { }