get or create a node in Godot, stopped working some point in 4.1.x

gistfile1.txt

## get existing or create new child node, works in tool mode to show in editor
static func get_or_create_child(_parent, _name, type = Node3D) -> Node:
    var child = _parent.get_node_or_null(_name)
    if not child:
        child = type.new()
        child.name = _name
        _parent.add_child(child)
        if Engine.is_editor_hint(): # if in editor we need to do this to show in editor
            child.set_owner(_parent.get_tree().edited_scene_root) # new, allows static
    return child

hell okay it sorta works sometimes