setPurposeTransaction method
Set purpose transaction
length of value
is 1 up to 25.
Implementation
setPurposeTransaction(String value) {
if (value.length > 25) {
throw MaxValueLengthErr(title: "PurposeTransaction", length: "25");
}
final purposeTransaction = setTLV(value, AdditionalID.purposeTransaction);
this.value = this.value.copyWith(purposeTransaction: purposeTransaction);
}