gistfile1.txt

postAccountUpdateProducts(
    products: MarketAccountUpdateProductDto[]
  ): Observable<MarketAccountCompleteDto | null> {
    return this.facade.data$.pipe(
      switchMap((dto: MarketAccountCompleteDto | null) => {
        if (dto) {
          const data: MarketAccountUpdateProductsDto = {
            user: dto.account,
            products
          };
          return this.marketService.postAccountUpdateProducts(data);
        }
        return of(dto);
      })
    );
  }