def METHOD_NAME(self, update_list):
    instance_data_by_id = {}
    for instance, _changes in update_list:
        # Persist the data
        instance_id = instance.get("instance_id")
        instance_data = instance.data_to_store()
        instance_data_by_id[instance_id] = instance_data
    set_instances(instance_data_by_id, update=True)