[Twisted-Python] perspective argument missing from Viewable.view_*

[Daniel Sank]

> Client then have to authenticate to the server, only then you will receive the
> perspective object representing the "logged" user into your view_ and
> perspective_ method.

I am confused by this. When I use the cred system the client gets a
remote reference to an Avatar on which it can call perspective_*
methods. How does this translate into having the proper perspective
passed into calls to view_* methods on other objects?