validate property

Implementation

@override
String? get validate {
  if (amount.isXrp && sendMax == null) {
    if (paths != null) {
      return "paths An XRP-to-XRP payment cannot contain paths.";
    }
    if (account == destination) {
      return "An XRP payment transaction cannot have the same sender and destination";
    }
  }
  return super.validate;
}