获取商品类目接口返回scene_group_list字段，问下这个字段的作用是什么？1、3、4分别表示什么意思呢，接口文档没看到相关说明

{"qualification":"","product_qualification_type":0,"second_cat_name":"口腔护理","scene_group_list":[1,3,4],"product_qualification":"","first_cat_name":"个人护理","third_cat_name":"假牙清洁","qualification_type":0,"second_cat_id":1002,"third_cat_id":1003,"first_cat_id":1001}