Преобразование кода на Angular 6

import { Http } from '@angular/http';
import { Injectable } from '@angular/core';
import { Observable } from "rxjs/Rx"
import "rxjs/add/operator/map";
 
@Injectable()
 
export class ImgService {
 
   constructor(private http: Http) {}
 
   getImages ( url: string ): Observable<any> {
    return this.http.get( url )
        .map( function( response ) {
            return response.json();
        })
        .map( response => response.images )
        .map( images => {
            return images.map( image => {
                return {
                    link: image.img
                }
            })
        })
   }
 
   
 
}

import { Injectable } from '@angular/core';
import { HttpClient } from '@angular/common/http';
import { Observable } from 'rxjs';
import { map } from 'rxjs/operators';
 
@Injectable()
export class ImgService {
 
  constructor(private httpClient:HttpClient) { }
 
  public getPhoto(url:string): Observable<any> {
    return this.httpClient.get(url)
 
  } 
 
}

 return this.httpClient.get(url).pipe(map(value=>{
 
}))