Hook to capture the results of a list query.
        Useful when wanting to know when certain documents have come up in a query.
        Implement in resource subclasses to provide domain-specific behavior

async def post_list(cls, sender, db, instances):
        '''
        Hook to capture the results of a list query.
        Useful when wanting to know when certain documents have come up in a query.
        Implement in resource subclasses to provide domain-specific behavior
        '''
        serialized_objects = await asyncio.gather(*[obj.serialize() for obj in instances])
        await cls.emit(db, 'resource_get_list', serialized_objects)