toJson method
Implementation
Map<String, dynamic> toJson() {
final Map<String, dynamic> data = <String, dynamic>{};
data['id'] = _id;
data['amount'] = _amount;
data['used'] = _used;
data['actualAmount'] = _actualAmount;
data['start'] = _start;
data['end'] = _end;
data['daysLeft'] = _daysLeft;
data['expired'] = _expired;
data['type'] = _type;
return data;
}