loadUnlockFeature method

Implementation

bool loadUnlockFeature() {
  final oldValue = storage.getBool('UNLOCK_FEATURE');
  if (oldValue != null) {
    storage.remove('UNLOCK_FEATURE');
    storage.setBool(keyUnlockFeature, oldValue);
    return oldValue;
  }
  return storage.getBool(keyUnlockFeature) ?? false;
}