toJson method
Implementation
Map<String, dynamic> toJson() {
final Map<String, dynamic> data = new Map<String, dynamic>();
data['id'] = this.id;
data['code'] = this.code;
data['discount'] = this.discount;
data['discount_tax'] = this.discountTax;
data['meta_data'] = this.metaData.map((v) => v.toJson()).toList();
return data;
}