I have the following code which is working great apart from it's returning nodes that aren't published. Where would I need to tweak it ? I presume I need a .Where("Visible") somewhere but not sure.

protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                var currentNode = Node.GetCurrent();

                // Retrieve the latest N articles from the parent folder
                var nodes = FindChildren(currentNode, t => (t.NodeTypeAlias.Equals("NewsArticle")));
                var nodesOutput = nodes.OrderByDescending(n => n.GetProperty("newsDate").Value).Take(numberOfArticles);

                newsRepeater.DataSource = nodesOutput;
                newsRepeater.DataBind();
            }
        }

private static List<Node> FindChildren(Node currentNode, Func<Node, bool> predicate)
        {
            List<Node> result = new List<Node>();

            var nodes = currentNode
                .Children
                .OfType<Node>()
                .Where(predicate);
            if (nodes.Count() != 0)
                result.AddRange(nodes);

            foreach (var child in currentNode.Children.OfType<Node>())
            {
                nodes = FindChildren(child, predicate);
                if (nodes.Count() != 0)
                    result.AddRange(nodes);
            }
            return result;
        }