HierarchicalFormModel parentModel = new DefaultFormModel();
assertNull(FormModelHelper.getChild(parentModel, "testChildName"));
final ValidatingFormModel childFormModel = FormModelHelper.createFormModel(new Object(), "testChildName");
parentModel.addChild(childFormModel);
assertNotNull(FormModelHelper.getChild(parentModel, "testChildName"));
assertNull(FormModelHelper.getChild(parentModel, "bogusChildName"));
}