def clear_usersettings_cache(sender, **kwargs):
    instance = kwargs['instance']
    try:
        del USERSETTINGS_CACHE[instance.site.pk]
    except KeyError:
        pass
Set of all relationships.
dataset/ETHPy150Open mishbahr/django-usersettings2/usersettings/models.py/clear_usersettings_cache--crossover with--dataset/ETHPy150Open nigelsmall/py2neo/py2neo/types.py/Subgraph.relationships