toJson method
Implementation
Map<String, dynamic> toJson() {
final result$data = <String, dynamic>{};
final l$owner = owner;
result$data['owner'] = l$owner.toJson();
final l$amount = amount;
result$data['amount'] = l$amount;
final l$coin = coin;
result$data['coin'] = l$coin;
return result$data;
}