toMap method
Implementation
Map<String, dynamic> toMap() => {
if (type != null) 'type': type,
if (externalUserId != null) 'externalUserId': externalUserId,
if (fullName != null) 'fullName': fullName,
if (firstName != null) 'firstName': firstName,
if (lastName != null) 'lastName': lastName,
if (dob != null) 'dob': dob,
if (address != null) 'address': address,
if (institutionInfo != null) 'institutionInfo': institutionInfo,
if (device != null) 'device': device,
if (paymentMethod != null) 'paymentMethod': paymentMethod!.toMap(),
};