public void gwtSetUp() throws Exception {
super.gwtSetUp();
// Create our tree, with a model of a few dummy nodes.
FileTreeNodeDataAdapter dataAdapter = new FileTreeNodeDataAdapter();
FileTreeNodeRenderer nodeRenderer =
FileTreeNodeRenderer.create(context.getResources());
Tree.View<FileTreeNode> view = new Tree.View<FileTreeNode>(context.getResources());
Tree.Model<FileTreeNode> model =
new Tree.Model<FileTreeNode>(dataAdapter, nodeRenderer, context.getResources());
// An empty root directory.