serialize method
Implementation
@override
Map<String, dynamic> serialize() {
return wrapSerializationData({
'id': id,
'anInt': anInt,
'aBool': aBool,
'aDouble': aDouble,
'aDateTime': aDateTime?.toUtc().toIso8601String(),
'aString': aString,
'aByteData': aByteData?.base64encodedString(),
});
}