toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (displayName != null) 'displayName': displayName!,
if (familyName != null) 'familyName': familyName!,
if (fullName != null) 'fullName': fullName!,
if (givenName != null) 'givenName': givenName!,
};