public async Task<JsonResult> FilmsData() {
     StarWarsApi<Film> apiResult = new StarWarsApi<Film>();
     return Json(await apiResult.RetrieveItemList("films"),
         new Newtonsoft.Json.JsonSerializerSettings() {
             ContractResolver = new DefaultContractResolver()
         }
     );
 }
 public async Task<IActionResult> FilmListing(int filmId) {
     StarWarsApi<Film> apiResult = new StarWarsApi<Film>();
     var model = await apiResult.RetrieveItemList("films");
     return View(model);
 }