toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (email != null) 'email': email!,
if (faxNumber != null) 'faxNumber': faxNumber!,
if (phoneNumber != null) 'phoneNumber': phoneNumber!,
if (postalAddress != null) 'postalAddress': postalAddress!.toJson(),
};