toJson method
Implementation
@override
Map<String, Object?> toJson() => {
"active": encodeValue(active),
if (position != null) "position": encodeValue(position),
if (price != null) "price": encodeValue(price),
if (product != null) "product": encodeValue(product),
"product_id": encodeValue(productId),
"variant_values": encodeValue(variantValues),
};