[Zope] quick test - can current user execute method?

Hi all, In a product's Python script method, I'd like to be able to do a quick test to see whether the current user can execute a particular management script, without hard-coding into the script what role(s) the script requires. Is there an easy way to do this? Or a hard way? I've read what I could in my two books and looked in the "Zope Cookbook", as well as in the mailing list archives and searched zope.org - it seems like a basic enough piece of functionality, and it's probably staring me in the face, but I can't see it. Thank you very much, Am