class Object:
    @classmethod
    def load(cls, attrs):
        obj, meta_date = cls(), dict()

        for k in ("createdAt", "updatedAt"):
            v = attrs.pop(k, None)
            if v is not None:
                meta_date[k] = v
                obj._attributes[k] = utils.decode(k, v)

        obj._merge_metadata(meta_date)

        # 此处不能直接 obj.set(attrs)，否则 Pointer 类型会被当做字典设置到字段上
        for k, v in attrs.items():
            obj.set(k, v)

        return obj