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