Clone this information item. If the information item is a container, then its descendants
will be cloned recursively. Note that in this case, this method will traverse the descendants
and create clones immediately. It will also preserve the original nodes. This means that
after the execution of this method, both the returned clone and the original container will
be completely built.
options - the options to use when cloning this element and its descendants; for object
models with domain specific extensions (such as SOAP), this may be a subclass of