/**
  * Access API Correios.
  *
  * @param  string $tracking_code.
  *
  * @return SimpleXMLElement|stdClass History Tracking code.
  */
 protected function get_tracking_history($tracking_code)
 {
     $user_data = $this->get_user_data();
     $args = apply_filters('woocommerce_correios_tracking_args', array('Usuario' => $user_data['login'], 'Senha' => $user_data['password'], 'Tipo' => 'L', 'Resultado' => 'T', 'Objetos' => $tracking_code));
     $api_url = $this->get_tracking_history_api_url();
     $request_url = add_query_arg($args, $api_url);
     $params = array('timeout' => 30);
     $this->logger('Requesting tracking history in: ' . print_r($request_url, true));
     $response = wp_safe_remote_get($request_url, $params);
     if (!is_wp_error($response) && $response['response']['code'] >= 200 && $response['response']['code'] < 300) {
         try {
             $tracking_history = WC_Correios_Connect::safe_load_xml($response['body'], LIBXML_NOCDATA);
         } catch (Exception $e) {
             $this->logger('Tracking history invalid XML: ' . $e->getMessage());
         }
     } else {
         $tracking_history = new stdClass();
         $tracking_history->error = true;
     }
     $this->logger('Tracking history response: ' . print_r($tracking_history, true));
     return $tracking_history;
 }