toPutJson method
Converts the body data model to a JSON object for a PUT request.
This method should be implemented by subclasses to convert their specific data to a JSON object. It should only include properties that need to be sent in a PUT request.
Implementation
@override
Map<String, dynamic>? toPutJson() {
Map<String, dynamic> data = <String, dynamic>{};
data["id"] = id;
data["quantity"] = quantity;
data["note"] = note;
return data;
}