@Override
    public MetadataNode child(String name) {
        if (name.equals(ClusterImageBrokersNode.NAME)) {
            return new ClusterImageBrokersNode(image);
        } else if (name.equals(ClusterImageControllersNode.NAME)) {
            return new ClusterImageControllersNode(image);
        } else {
            return null;
        }
    }
@Test
    public void testBrokersChild() {
        MetadataNode child = NODE.child("brokers");
        assertNotNull(child);
        assertEquals(ClusterImageBrokersNode.class, child.getClass());
    }