toJson method

Implementation

@override
Map<String, dynamic> toJson() {
  final json = super.toJson();
  addWhenNotNull(json, "channel", channel);
  addWhenNotNull(json, "balance", balance?.toString());
  addWhenNotNull(json, "amount", amount?.toString());
  addWhenNotNull(json, "signature", signature);
  addWhenNotNull(json, "public_key", publicKey);
  return json;
}