sortedByOutputsDepth method
Implementation
List<Node<T>> sortedByOutputsDepth({bool bfs = false}) {
var nodesOutputs = outputsInDepth(bfs: bfs);
var entries = nodesOutputs.entries.toList();
entries.sort((a, b) => a.value.length.compareTo(b.value.length));
var nodes = entries.keys.toList();
return nodes;
}