toJson method
Implementation
Map<String, dynamic> toJson() {
final Map<String, dynamic> data = new Map<String, dynamic>();
data['first_name'] = this.firstName ?? "";
data['last_name'] = this.lastName ?? "";
data['address_1'] = this.address1 ?? "";
data['address_2'] = this.address2 ?? "";
data['city'] = this.city ?? "";
data['state'] = this.state ?? "";
data['postcode'] = this.postcode ?? "";
data['country'] = this.country ?? "";
return data;
}