Here is an example of using the Tree in a simple page:
<html>
<head>
<link href="https://developer.temenos.com/uux/base.css" rel="stylesheet" />
<script src="https://developer.temenos.com/uux/unified-ux-web.min.js"></script>
</head>
<body>
<uwc-tree> </uwc-tree>
<script>
const tree = document.querySelector("uwc-tree");
tree.treeItems = [
{"label": "item 1"},
{"label": "item 2"},
{"label": "item 3", "childItems": [
{"label": "subItem 1"},
{"label": "subItem 2"}
]}
]
</script>
</body>
</html>