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