How to use with async pipe?

[kolkov]

Hi! How to use in this case?

<div *ngFor="let product of (products | async).items"

export class StoreFrontComponent implements OnInit {
  public products: Observable<ProductList>;

  constructor(private productsService: ProductsService,
              private shoppingCartService: ShoppingCartService) { }

  ngOnInit() {
    this.products = this.productsService.all()
  }

  public addProductToCart(product: Product): void {
    this.shoppingCartService.addItem(product, 1);
  }

  public removeProductFromCart(product: Product): void {
    this.shoppingCartService.addItem(product, -1);
  }