code: public ClassType<BeanType<T>> getOrCreateClazz()
     {
        Node node = childNode.getOrCreate("class");
        ClassType<BeanType<T>> clazz = new ClassTypeImpl<BeanType<T>>(this, "class", childNode, node);
        return clazz;
     }
docs: If not already created, a new <code>class</code> element with the given value will be created.
  Otherwise, the existing <code>class</code> element will be returned.
  @return  a new or existing instance of <code>ClassType<BeanType<T>></code>