mybeAs<E, T> method
Implementation
E? mybeAs<E, T>({required String key, required E Function(T e) onValue}) {
if (this[key] != null) {
if (_map is T) {
return onValue(asMap(key));
}
if (_list is T) {
return onValue(_valueAsList(key));
}
return onValue(as(key));
}
return null;
}