toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (attributes != null) 'attributes': attributes!,
if (displayName != null) 'displayName': displayName!,
if (endTime != null) 'endTime': endTime!,
if (name != null) 'name': name!,
if (startTime != null) 'startTime': startTime!,
if (state != null) 'state': state!,
};