}
@Test
public void testForestVisualize() throws Exception {
// Tree
NumericalNode root = new NumericalNode(2, 90, new Leaf(0),
new CategoricalNode(0, new double[] {0, 1, 2}, new Node[] {
new NumericalNode(1, 71, new Leaf(0), new Leaf(1)), new Leaf(1),
new Leaf(0)}));
List<Node> trees = Lists.newArrayList();
trees.add(root);
// Forest