protected function initAction()
    {
        $this->action = $this->argument('action');

        if (! in_array($this->action, ['start', 'stop', 'restart', 'reload', 'infos'], true)) {
            $this->error(
                "Invalid argument '{$this->action}'. Expected 'start', 'stop', 'restart', 'reload' or 'infos'."
            );

            return;
        }
    }