optIn property
When creating an application, you have the option of opting in with the same transaction. Without this flag a separate transaction is needed to opt-in.
Implementation
set optIn(bool optIn) {
if (optIn) {
onCompletion = OnCompletion.OPT_IN_OC;
} else {
onCompletion = OnCompletion.NO_OP_OC;
}
}