code: def get(self, request):
          
  
          if request.user.is_authenticated():
              return HttpResponseRedirect(self.get_next(request))
  
          try:
              user, profile, client = self.get_session_data(request)
          except KeyError:
              return self.error_to_response(request, dict(
                  error=_("Social profile is missing from your session.")))
           
          if GENERATE_USERNAME:
              return self.generate_username_and_redirect(request, user, profile, client)
              
          form = self.get_form()(initial=self.get_initial_data(request, user, profile, client))
          
          additional_context = self.get_context(request, user, profile, client)
          return self.render_to_response(dict({'form': form}, **additional_context))
docs: When signing a new user up - either display a setup form, or
          generate the username automatically.