private static Retrofit.Builder builder =
        new Retrofit.Builder()
                .baseUrl(API_BASE_URL)
                .addConverterFactory(GsonConverterFactory.create());

page: 1,
    results: [
    {
    poster_path: "/sdfsdf.jpg",
    adult: false,
    overview: "Based upon Marvel Comics’ most unconventional anti-hero, DEADPOOL tells the orig.",
    release_date: "2016-02-09",
    genre_ids: [
    35,
    12,
    28,
    878
    ]
}],
    total_results: 254975,
    total_pages: 12749

public interface MovieApi {
    @GET("3/discover/movie")
    Call<MovieDataRet> getMovieList(@Query("sort_by") String sort,@Query("api_key") String api_key,@Query("page") int page);

}

public class MovieDataRet {
    public  int page;
    public int total_results;
    public int total_pages;
    public ArrayList<Movie> results;
}

`    MovieApi movieApi = ServiceGenerator.createService(MovieApi.class);
        Call<MovieDataRet> call= movieApi.getMovieList("popularity.desc", BuildConfig.MOVIE_DB_API_KEY, 1);
        try {

               MovieDataRet movies = call.execute().body();
            Log.d("QQQ", movies.toString());
        } catch (IOException e) {
            e.printStackTrace();