public void testTreeModelRootWithOneChild() throws Exception {
   _testBean(TreeModel.class, TreeModel.createTestInstanceWithRootAndOneChildNode());
 }
 public void testTreeModelRootWithMultipleChildren() throws Exception {
   _testBean(TreeModel.class, TreeModel.createTestInstanceWithRootAndMultipleChildNodes());
 }
 public void testTreeModelBean() throws Exception {
   _testBean(TreeModel.class, TreeModel.createTestInstance());
 }