[Zope] how to get session id with a DTML expression?

[Paul Duriot]

I would like to get the session ID of the user once he is logged from a DTML Document.

I know for example, that I can do : <dtml-var expr="_.SecurityGetUser().getUserName()">
to retrieve the name of current User and to display it.

Is there anything  in order to do the same for retrieving ID Session???

Thanks a lot!