I'd like to use
[PassThroughManager](https://django-model-utils.readthedocs.org/en/latest/managers.html#passthroughmanager). 

Example covers how to define custom manager methods, but can't find info on how to change the *default* queryset, ie. objects.all(). 

How can I specify what my objects.all() will return when using PassThroughManager? 

--- edit --

For future readers, 
django 1.7 seems to have PassThroughManager built-in

<https://docs.djangoproject.com/en/dev/topics/db/managers/#custom-managers-and-model-inheritance>