filterBy method
Implementation
List<ManifestNode> filterBy(ManifestNode node) {
if (_parent != null && node.title == _parent?.title) {
return [_parent!];
}
var lst = _children.where((element) => element.uuid == node.uuid).toList();
for (var item in _children) {
lst.addAll(item.filterBy(node));
}
return lst;
}