trace method

Implementation

Future<List<Node>> trace(String nodeId) async {
  final path = <Node>[];
  String? currentId = nodeId;

  while (currentId != null) {
    try {
      final node = await _repository.get(currentId);
      node.validate();
      path.add(node);
      currentId = node.previous;
    } catch (e) {
      if (e is RepositoryException &&
          e.code == RepositoryErrorCode.notFound) {
        break;
      }
      rethrow;
    }
  }

  return path;
}