public JSONArray getChildrenAsJSON(String nodeURI) throws Exception {
WebuiRequestContext context = WebuiRequestContext.getCurrentInstance();
UIPortalNavigation uiPortalNavigation = getChild(UIPortalNavigation.class);
Collection<UserNode> childs = null;
UserNode userNode = uiPortalNavigation.resolvePath(nodeURI);
if (userNode != null) {
childs = userNode.getChildren();
}
JSONArray jsChilds = new JSONArray();