Problem with Django rest swagger and get_serializer_class

views.py

def my_view_mocker(view):
    view.request.tacos = 'Hi'
    print "This is the viewmocker, just changed view.request.tacos to %s" % view.request.tacos
    return view

class FileTree(generics.ListAPIView):
    model = File
    lookup_field = 'file_id'
    paginate_by = 25
    paginate_by_param = 'items'

    def get_serializer_class(self):
        print "This is the get_serializer_class method, self.request.tacos is %s" % self.request.tacos
        return FileTreeSerializer
    
    def queryset(self):
        return File.objects.all()
        
    def get(self, request, *args, **kwargs):
        """
        ---
        view_mocker: my_view_mocker
        """
        return super(FileTree, self).get(request, *args, **kwargs)