def clear_app_reverse_cache():
    """
    Clear the cache for the :func:`app_reverse` function.
    This only has to be called when doing bulk update/delete actions that circumvent the individual model classes.
    """
    from django.core.cache import cache
    from fluent_pages.extensions import page_type_pool
    for model in page_type_pool.get_model_classes():
        cache.delete('fluent_pages.instance_of.{0}'.format(model.__name__))
