toJson method

Implementation

@override
Map<String, dynamic> toJson() {
  final json = super.toJson();
  addWhenNotNull(json, "amount", amount.toString());
  addWhenNotNull(json, "destination", destination);
  addWhenNotNull(json, "destination_tag", destinationTag);
  addWhenNotNull(json, "cancel_after", cancelAfter);
  addWhenNotNull(json, "finish_after", finishAfter);
  addWhenNotNull(json, "condition", condition);
  return json;
}