JLine completer with Brigadier

Question

I want to make a console application with jline and brigadier, but I have problem on command completing. I can complete the literal command but can't complete argument commands.

What I did:

private static List<Completers.TreeCompleter.Node> generateNodes(CommandNode<ConsoleSender> root) {
    List<Completers.TreeCompleter.Node> nodes = new ArrayList<>();
    for (CommandNode<ConsoleSender> commandNode : root.getChildren()) {
        List<Object> objects = new ArrayList<>();
        if (commandNode instanceof ArgumentCommandNode<?, ?>) {
            objects.add(new StringsCompleter()); // cannot complete if user input non-literal arguments
        } else {
            objects.add(commandNode.getName());
        }
        objects.addAll(generateNodes(commandNode));
        nodes.add(Completers.TreeCompleter.node(objects.toArray()));
    }
    return nodes;
}

> hello literal // can complete well
> hello <name: string value> literal // "literal" cannot be completed

What I want:

> hello literal // can complete well
> hello <name: string value> literal // "literal" can be completed well without bugs whatever the value of name argument is