[Zope] acl_users and acquisition

[Garito]

Hi
If I have a structure like

root
    acl_users
       User1
       User2
    Folder1
       acl_users
          User3

How can I get, asking to the acl_users in Folder1 the complete list of users
For me the complet list of users is

    User1, User2, User3

Did acquisition work here for the userlist?

Thanks!