Get access token from Python Social Auth

Question

I have Python Social Auth implemented on my site, and I'm trying to access (after the login process) into the access token that the user got. I can see on the Django admin that there's a field called extra_data containing the access token, but I don't know how to access it from my code.

Any idea?

I want to do something similar as it could be done in Django Social Auth: http://django-social-auth.readthedocs.org/en/latest/tokens.html