[Zope] Disable access for class method with HTTP GET

[Nicolas Perrier - Zindep]

Hi,

For security reasons, i need to disable access on class method with HTTP 
GET requests on my zope.
For example, i can accept things like
http://examplesite.com/object/aPythonScript
but not
http://examplesite.com/object/aClassMethod

Is it possible ?

Thanks for any help

Nicolas