toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (advices != null) 'advices': advices!,
if (changeType != null) 'changeType': changeType!,
if (element != null) 'element': element!,
if (newValue != null) 'newValue': newValue!,
if (oldValue != null) 'oldValue': oldValue!,
};