current_tick: None,
        }
    }
    pub fn from_node<N>(node: N) -> Self
    where
        N: BehaviorNode<B> + 'static,
    {
        Self {
            tree: Arc::new(node),

    pub fn into_inner(self) -> BehaviorArc<B> {
        self.current_tick.unwrap_or(self.tree)
    }