public function set_words_count_panel_default_status()
 {
     $open = filter_input(INPUT_GET, 'open', FILTER_VALIDATE_BOOLEAN);
     $valid_nonce = check_ajax_referer('wpml_set_words_count_panel_default_status', 'wpml_words_count_panel_nonce', false);
     if ($valid_nonce) {
         $this->wpml_tm_words_count->set_words_count_panel_default_status($open);
     }
     $result = 'Ok!';
     return $this->wpml_wp_api->wp_send_json_success($result);
 }