[Zope] User is logged in? (LoginManager)

How do you determine if the user is logged in? You can not check for "Anonymous User" because the user can briefly be "LoggingInUser". You can not check for the Anonymous role because LoginManager forces everybody to have the Anonymous role. I think if LoginManager gave LoggingInUser the Anonymous role and stopped forcing everybody else to have the Anonymous role, I could use the Anonymous role for the test. Is there another way to determine if the user is logged in? Thanks.