varargs in Twig custom functions

Extension.php

<?php

class Extension extends Twig_Extension
{
    public function myFunc ()
    {
        var_dump(func_get_args());
    }


    public function getFunctions ()
    {
        return [
            new Twig_SimpleFunction("myFunc", [$this, "myFunc"])
        ];
    }

    public function getName ()
    {
        "test";
    }
}

index.php

<?php

require_once 'vendor/autoload.php';
require_once 'Extension.php';

$loader = new Twig_Loader_String();
$twig = new Twig_Environment($loader, [
]);

$twig->addExtension(new Extension());

echo $twig->render("{{ myFunc(1, 2, 3, 4, 5) }}");

Output:

array (size=5)
  0 => int 1
  1 => int 2
  2 => int 3
  3 => int 4
  4 => int 5