def get_relationship_notification_session_for_family(self, relationship_receiver=None, family_id=None, proxy=None):
pass<EOL>
Gets the ``OsidSession`` associated with the relationship notification service for the given family.

        arg:    relationship_receiver
                (osid.relationship.RelationshipReceiver): the receiver
        arg:    family_id (osid.id.Id): the ``Id`` of the family
        arg:    proxy (osid.proxy.Proxy): a proxy
        return: (osid.relationship.RelationshipNotificationSession) - a
                ``RelationshipNotificationSession``
        raise:  NotFound - no ``Family`` found by the given ``Id``
        raise:  NullArgument - ``relationship_receiver, family_id`` or
                ``proxy`` is ``null``
        raise:  OperationFailed - unable to complete request
        raise:  Unimplemented - ``supports_relationship_notification()``
                or ``supports_visible_federation()`` is ``false``
        *compliance: optional -- This method must be implemented if ``supports_relationship_notification()``
            and ``supports_visible_federation()`` are ``true``*