toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (items != null) 'items': items!,
if (merchantFeedLabel != null) 'merchantFeedLabel': merchantFeedLabel!,
if (merchantFeedLanguage != null)
'merchantFeedLanguage': merchantFeedLanguage!,
if (merchantId != null) 'merchantId': merchantId!,
};