public function addGlobalCustomArgs($custom_args)
    {
        if (current($custom_args) instanceof CustomArg) {
            foreach ($custom_args as $custom_arg) {
                $this->addGlobalCustomArg($custom_arg);
            }
        } else {
            foreach ($custom_args as $key => $value) {
                $this->addGlobalCustomArg($key, $value);
            }
        }
    }