return response()->download($filepath, "name_of_csv.csv", ['location' => some_url']);

    public function with($key, $value = null)
    {
        if (is_array($key)) {
            $this->data = array_merge($this->data, $key);
        } else {
            $this->data[$key] = $value;
        }

        return $this;
    }

    public function with($key, $value = null)
    {
        $key = is_array($key) ? $key : [$key => $value];

        foreach ($key as $k => $v) {
            $this->session->flash($k, $v);
        }

        return $this;
    }