AsyncDataChangeEvent<InstanceIdentifier<?>, DataObject> top = topListener.event();
AsyncDataChangeEvent<InstanceIdentifier<?>, DataObject> all = allListener.event();
AsyncDataChangeEvent<InstanceIdentifier<?>, DataObject> foo = fooListener.event();
AsyncDataChangeEvent<InstanceIdentifier<?>, DataObject> top = topListener.event();
AsyncDataChangeEvent<InstanceIdentifier<?>, DataObject> all = allListener.event();
AsyncDataChangeEvent<InstanceIdentifier<?>, DataObject> foo = fooListener.event();