final AtomicBoolean isActive = new AtomicBoolean(false);

        dataStore = new DataStore() {
            @Override
            public void store(DataConfig config, IndexUpdateCallback callback, DataStoreParams initParamMap) {
                storeCalled.set(true);
                isActive.set(true);
            }

            @Override

      this.loading = loading;
    }

    @Override
    public boolean isLoading() {
      return loading;
    }

    @Override
    public boolean isActive() {
      return !loading;
    }

    @Override
    public V waitForValue() {
      return get();
    }

    @Override
    public void notifyNewValue(V newValue) {}