[Zope] DTML: fetch an object by its url?

In DTML is it possible to get an object using its url? Something like <dtml-with "get_object( '/some/local/url' )">...</dtml-with> Similar to <dtml-with "_.getitem( name )">...</dtml-with> but what I have is the object's zserver url, not its name in the current namespace. TIA, Scott