protected function initMeta(): void
    {
        // cache for reflection data
        $cacheKey = "meta.{$this->module}.{$this->controller}";

        if (!$meta = Cache::get($cacheKey)) {
            $meta = new Meta($this->getFile());
            $meta->process();

            Cache::set(
                $cacheKey,
                $meta,
                Cache::TTL_NO_EXPIRY,
                ['system', 'meta']
            );
        }
        $this->meta = $meta;
    }