App\Services\Setting\Setting::get PHP Method

    public function get($key = null, $default = null)
    {
        if (is_null($key)) {
            return $this->items;
        }
        return array_key_exists($key, $this->changed) ? $this->changed[$key] : (array_key_exists($key, $this->items) ? $this->items[$key] : $default);
    }