toMap method
Converts the ecommerce transaction item object to JSON.
Implementation
Map<String, Object?> toMap() {
return {
'itemId': itemId,
'sku': sku,
'price': price,
'quantity': quantity,
'name': name,
'category': category,
'currency': currency,
'contexts': contexts.map((context) => context.toMap()).toList()
};
}