def list_objects(self, uid, token, query={}):
        database = self.client[uid]
        database.authenticate(uid, token)
        collection = database['data_objects']
        res = []
        for item in collection.find(query):
            res.append((str(item['_id']), item['meta']))
        return res
List the objects of a user.
dataset/ETHPy150Open tmetsch/suricate/suricate/data/object_store.py/MongoStore.list_objects