toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (etag != null) 'etag': etag!,
if (id != null) 'id': id!,
if (kind != null) 'kind': kind!,
if (selfLink != null) 'selfLink': selfLink!,
if (title != null) 'title': title!,
if (updated != null) 'updated': updated!,
};