问如何在不覆盖的情况下加载数据？

EN

GetPiins(page: string): Observable<ListPiinsResponse>  {
  const limit = '8';
  const piins = this.http.get<ListPiinsResponse>(
      `${this.baseUrl}/piins/FollowerAndFriend`, {
        params: {
          limit: limit, page
        }
  });
  return piins;
}

this.store$.dispatch(new PiinsFeatureStoreActions.LoadCurrentUserPiins('1'));

this.piins$ = this.store$.pipe(
  select(PiinsFeatureStoreSelectors.selectAllPiinsFeatureItems),
  filter(value => value !== undefined),
);

onScroll() {
  this.counterPage += 1;
  this.store$.dispatch(new 
  PiinsFeatureStoreActions.LoadCurrentUserPiins(
   String(this.counterPage)
  ));
}

    case ActionTypes.LOAD_PIINS_SUCCESS:{
      const newPiins = featureAdapter.addAll(action.payload, {
        ...state, // I think here I need to concat this value 
        isLoading: false,
        error: null
      });

      return newPiins;
    }