Cache persisting despite being disabled by child serializer

@sylvainlehmann reported to me that despite using

class ResponseSerializer(LDPSerializer):
    with_cache = False

class ResponseViewSet(LDPViewSet):
    serializer_class = ResponseSerializer

The serializer cache was still active, when it should not be. First step is to replicate this in a unit test

added BUG label

Posting a workaround found by @sylvainlehmann

class ResponseContainerSerializer(ContainerSerializer):
    @property
    def with_cache(self):
        return False

class ResponseSerializer(LDPSerializer):
    with_cache: False

class ResponseViewSet(LDPViewSet):
    serializer_class = ResponseSerializer

    def build_serializer(self, meta_args, name_prefix):
        meta_args['list_serializer_class'] = ResponseContainerSerializer

        return super(ResponseViewSet, self).build_serializer(meta_args, name_prefix)

Note this seems to append on nested field requests

Here is model definition

class Poll(Model):
    [removed code]

    class Meta(Model.Meta):
        [removed code]
        nested_fields = ["questions"]
        rdf_type = 'sib:poll'
        container_path = 'polls/'

class ResponseContainerSerializer(ContainerSerializer):
    @property
    def with_cache(self):
        return False

class ResponseSerializer(LDPSerializer):
    with_cache: False

class ResponseViewSet(LDPViewSet):
    serializer_class = ResponseSerializer

    def build_serializer(self, meta_args, name_prefix):
        meta_args['list_serializer_class'] = ResponseContainerSerializer

        return super(ResponseViewSet, self).build_serializer(meta_args, name_prefix)

class ResponsePermissions(LDPPermissions):

    def get_container_permissions(self, request, view, obj=None):
        perms = super().get_container_permissions(request, view, obj)

        poll = Model.resolve_parent(request.path)
        user_has_responded = request.user.is_authenticated and poll.responses.filter(author=request.user).exists()
        if user_has_responded and 'add' in perms:
            perms.remove('add')

        return perms


class Response(Model):
    created_at = models.DateTimeField(auto_now_add=True, null=True, blank=True)
    author = models.ForeignKey(settings.AUTH_USER_MODEL, related_name='createdVotesResponses', null=True, blank=True,
                               on_delete=models.SET_NULL)
    poll = models.ForeignKey(Poll, related_name='responses', on_delete=models.CASCADE)

    class Meta(Model.Meta):
        auto_author = 'author'
        anonymous_perms = []
        authenticated_perms = ['add']
        owner_perms = ['view']
        owner_field = 'author'
        serializer_fields = ['@id', 'created_at', 'author', 'poll', 'items']
        rdf_type = 'sib:poll_response'
        container_path = 'polls_response/'
        view_set = ResponseViewSet
        permission_classes = [ResponsePermissions]

Witout ResponseContainerSerializer related code, the method get_container_permissions is only called once, on the first request on /polls/1/responses/ and not on further requests