toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (contentLanguage != null) 'contentLanguage': contentLanguage!,
if (gtin != null) 'gtin': gtin!,
if (itemId != null) 'itemId': itemId!,
if (price != null) 'price': price!,
if (quantity != null) 'quantity': quantity!,
if (saleId != null) 'saleId': saleId!,
if (storeCode != null) 'storeCode': storeCode!,
if (targetCountry != null) 'targetCountry': targetCountry!,
if (timestamp != null) 'timestamp': timestamp!,
};