def METHOD_NAME(self):
    eio = EnkelvoudigInformatieObjectFactory.create()
    eio_path = reverse(eio)
    eio_url = f"http://testserver{eio_path}"
    ZaakInformatieObjectFactory.create(informatieobject=eio_url)
    oio = ObjectInformatieObject.objects.get(informatieobject=eio_url)
    response = self.client.get(reverse(oio))
    self.assertHasETag(response)