: interface City {     name: string; }  class CitiesComponent implements OnInit {     public cities$: Observable<City[]>;      constructor(private readonly api: ApiClient) {}      ngOnInit() {         this.cities$ = this.api.getCities(`country_id=0000000`);     } }  <ul class="findDir" *ngIf="(cities$ | async) as cities">     <li *ngFor="let city of cities">         <a [attr.href]="