How do you map the payload in angular2 v5 using the HttpClient and redux : How would I do the equivalent of this call in my service using HttpClient instead of Http?  HttpClient doesn't the map() call.

      loadObservations() {
    this.http.get(`${BASE_URL}${1000}`)
      .map(res => res.json())
      .map(payload => ({ type: 'ADD_OBSERVATIONS', payload }))
      .subscribe(action => this.store.dispatch(action));
  }