def get_object (self, request):
        # BUG: there's probably reentrancy issues when one from this
        #      class is trying to serve 2 requests at almost the same time
        stages = request.GET.get('stage', False)
        self.stages = stages.split(',') if stages else False
        return None
Not really getting the object here, just storing the requested 
dataset/ETHPy150Open ofri/Open-Knesset/laws/feeds.py/Bills.get_object