Godot Get Children Recursive

# replaces the old get_children_recursive() function
func get_recursive_children(node):
    var childList = []
    childList += [node]
    var index = 0
    while index < childList.size():
        if(childList[index].get_child_count() > 0):
            childList += childList[index].get_children()
        index += 1
    return childList

    pass

# list nodes in a given group, from a list of nodes
func get_grouped_nodes(nodeList, group):
    var nodes = []
    for i in nodeList:
        if i.is_in_group(group):
            nodes += [i]
    return nodes
    pass