/**
  * Invalidation
  *
  * @param object $cf_client
  * @param array $query
  * @access private
  * @since 4.3.0
  * @return boolean | WP_Error
  **/
 private function _do_invalidation($cf_client, $query)
 {
     try {
         set_transient(self::C3_INVALIDATION_KEY, true, 5 * 60);
         $result = $cf_client->createInvalidation($query);
         return true;
     } catch (Aws\CloudFront\Exception\TooManyInvalidationsInProgressException $e) {
         error_log($e->__toString(), 0);
         $e = new WP_Error('C3 Invalidation Error', $e->__toString());
         return $e;
     } catch (Aws\CloudFront\Exception\AccessDeniedException $e) {
         error_log($e->__toString(), 0);
         $e = new WP_Error('C3 Invalidation Error', $e->__toString());
         return $e;
     } catch (Exception $e) {
         $e = new WP_Error('C3 Invalidation Error', $e->getMessage());
         error_log($e->get_error_messages(), 0);
         return $e;
     }
 }