How to paginate a custom detail_route get on djangorestframework

view_api_with_pagination.py

# ViewSets define the view behavior.
class FooViewSet(viewsets.ModelViewSet):
    lookup_field = 'slug'
    queryset = Foo.objects.all()
    serializer_class = FooSerializer

    def get_queryset(self):
        """
        This view should return a list of all records
        """
        return Foo.objects.all().order_by('name')

    @detail_route(methods=['get'])
    def bar(self, request, slug=None):
        foo = self.get_object()

        qs = foo.bars.all().order_by('date')
        
        page = self.paginate_queryset(qs)
        if page is not None:
            serializer = BarSerializer(page, many=True)
            return self.get_paginated_response(serializer.data)

        serializer = BarSerializer(qs, many=True)
        return Response(serializer.data)