获取产品类别列表

{
    "count": 0,
    "offset": 0,
    "limit": 0,
    "product_categories": [
        {
            "id": "pcat_01G2SG30J8C85S4A5CHM2S1NS2",
            "name": "Regular Fit",
            "description": "",
            "handle": "regular-fit",
            "mpath": "pcat_id1.pcat_id2.pcat_id3",
            "is_internal": false,
            "is_active": false,
            "rank": 0,
            "parent_category_id": null,
            "parent_category": {},
            "created_at": "2019-08-24T14:15:22.123Z",
            "updated_at": "2019-08-24T14:15:22.123Z",
            "category_children": [
                {}
            ],
            "products": [
                {}
            ],
            "metadata": {
                "car": "white"
            }
        }
    ]
}