validate property
Implementation
@override
String? get validate {
if (amount2 != null && amount == null) {
return "Must set amount with amount2";
} else if (ePrice != null && amount == null) {
return "Must set amount with ePrice";
} else if (lpTokenIn != null && amount == null) {
return "Must set at least lpTokenIn or amount";
}
return super.validate;
}