how to use Responses in laravel

return Response::make($contents);
return Response::make($contents, 200);
return Response::json(['key' => 'value']);
return Response::json(['key' => 'value'])
    ->setCallback(Input::get('callback'));
return Response::download($filepath);
return Response::download($filepath, $filename, $headers);
// Create a response and modify a header value$response = Response::make($contents, 200);
$response->header('Content-Type', 'application/json');
return $response;
// Attach a cookie to a responsereturn Response::make($content)
    ->withCookie(Cookie::make('key', 'value'));