protected function initFileNames()
    {
        $this->items_csv_filename  = 'items-' . $this->language . '.csv';
        $this->items_xml_filename  = 'items-' . $this->language . '.xml';
        $this->items_json_filename = 'items-' . $this->language . '.json';

        $this->media_csv_filename = 'media-' . $this->language . '.csv';

        $this->categories_csv_filename  = 'categories-' . $this->language . '.csv';
        $this->categories_xml_filename  = 'categories-' . $this->language . '.xml';
        $this->categories_json_filename = 'categories-' . $this->language . '.json';

        $this->reviews_csv_filename = 'reviews-' . $this->language . '.csv';

        $this->access_log_filename  = 'access-' . $this->language . '.log';
        $this->request_log_filename = 'request-' . $this->language . '.log';
        $this->error_log_filename   = 'error-' . $this->language . '.log';
        $this->debug_log_filename   = 'debug-' . $this->language . '.log';

        $this->redirect_keyword_cache_filename      = 'redirect_keywords-' . $this->language . '.txt';
        $this->redirect_skip_keyword_cache_filename = 'skip_redirect_keywords-' . $this->language . '.txt';
    }