How to use the cornice.cors.apply_cors_post_request function in cornice

if request.matched_route is not None:
        # do some sanity checking on the response using filters
        services = request.registry.cornice_services
        pattern = request.matched_route.pattern
        service = services.get(pattern, None)
        if service is not None:
            kwargs, ob = getattr(request, "cornice_args", ({}, None))
            for _filter in kwargs.get('filters', []):
                if is_string(_filter) and ob is not None:
                    _filter = getattr(ob, _filter)
                try:
                    response = _filter(response, request)
                except TypeError:
                    response = _filter(response)
            if service.cors_enabled:
                apply_cors_post_request(service, request, response)

    return response