def update_last_modified(self, bch, obj_type, obj_uuid, id_perms=None):
    if (id_perms is None):
        id_perms = self._cassandra_driver.get_one_col(datastore_api.OBJ_UUID_CF_NAME, obj_uuid, 'prop:id_perms')
    id_perms['last_modified'] = datetime.datetime.utcnow().isoformat()
    self._update_prop(bch, obj_uuid, 'id_perms', {'id_perms': id_perms})
    if (obj_type not in self._obj_cache_exclude_types):
        self.update_latest_col_ts(bch, obj_uuid)
def update_last_modified(self, bch, obj_type, obj_uuid, id_perms=None):
    if (id_perms is None):
        id_perms = self._cassandra_driver.get_one_col(datastore_api.OBJ_UUID_CF_NAME, obj_uuid, 'prop:id_perms')
    id_perms['last_modified'] = datetime.datetime.utcnow().isoformat()
    self._update_prop(bch, obj_uuid, 'id_perms', {'id_perms': id_perms})
    if (obj_type not in self._obj_cache_exclude_types):
        self.update_latest_col_ts(bch, obj_uuid)