listenForCode method
Implementation
void listenForCode({String? smsCodeRegexPattern}) {
_subscription = _autoFill.code.listen((code) {
this.code = code;
codeUpdated();
});
(smsCodeRegexPattern == null)
? _autoFill.listenForCode()
: _autoFill.listenForCode(smsCodeRegexPattern: smsCodeRegexPattern);
}