Angular 2タイスクリプトのjsonオブジェクトListの戻り値の型は何ですか？

Question

ここで、特定の戻り値の型となるgetFiles（）の戻り値の型（any以外）

@Injectable() 
    export class NodeService { 

     constructor(private http: Http) {} 

     getFiles() { 
      return this.http.get('./resources/data/cars-medium.json') 
         .map((res: any) => res.json().data); 
     } 
    } 

車-medium.json

{ 
    "data":[ 
     {"vin":"a1653d4d","brand":"VW","year":1998,"color":"White"}, 
     {"vin":"ddeb9b10","brand":"Mercedes","year":1985,"color":"Green"}, 
     {"vin":"d8ebe413","brand":"Jaguar","year":1979,"color":"Silver"}, 
     {"vin":"aab227b7","brand":"Audi","year":1970,"color":"Black"}, 
     {"vin":"631f7412","brand":"Volvo","year":1992,"color":"Red"}, 
     {"vin":"7d2d22b0","brand":"VW","year":1993,"color":"Maroon"} 
      ] 
} 

Answer 1

getFiles():Observable<Object[]> { 

あなたは

interface Car { 
    vin:string; 
    brand: string; 
    year:number; 
    color:string; 
} 

ようなインターフェイスを持っている場合も

getFiles():Observable<Car[]> {