toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (displayName != null) 'displayName': displayName!,
if (displayVersion != null) 'displayVersion': displayVersion!,
if (helpLink != null) 'helpLink': helpLink!,
if (installDate != null) 'installDate': installDate!,
if (publisher != null) 'publisher': publisher!,
};