code: function attemptFailEvent(request) {
      var monitoringEvent = this.apiAttemptEvent(request);
      var response = request.response;
      var error = response.error;
      if (response.httpResponse.statusCode > 299 ) {
        if (error.code) monitoringEvent.AwsException = error.code;
        if (error.message) monitoringEvent.AwsExceptionMessage = error.message;
      } else {
        if (error.code || error.name) monitoringEvent.SdkException = error.code || error.name;
        if (error.message) monitoringEvent.SdkExceptionMessage = error.message;
      }
      return monitoringEvent;
    }
docs: Add metrics of failed request.
  @api private