Laravel 5 多重下载文件

This code will work correctly if I open browser at 127.0.0.1/load/files. (Auto Download File)

ABCController.php

namespace AppHttpControllers;

use Response;
use File;

function download_file(){
    return Response::download(public_path() . "/files/file_1.txt");
}

routes.php

Route::get('/load/files','ABCController@download_file');

我可以使用 1 个路径和 1 个功能同时下载 2 个文件吗?比如

function download_file(){
    return Response::download(["file_1.txt","file_2.txt"]); //this code not right
}