checkAgeSignals method
Checks the age signals for the current user.
Returns an AgeSignalsResult containing the verification status and any available age information.
On iOS, you must call initialize with age gates before calling this method.
Throws AgeSignalsException if an error occurs during the check.
Implementation
Future<AgeSignalsResult> checkAgeSignals() {
throw UnimplementedError('checkAgeSignals() has not been implemented.');
}