打印SKU入库标签
方法名称：print_sku_in_stock_label
请求地址：https://open.patpat.com/api/print_sku_in_stock_label
支持请求方式： GET POST
系统级输入参数:
| 名称 | 类型 | 是否必须 | 描述 |
| _timestamp | string | 否 | 请求时间戳 |
| _signature | String | 是 | 请求签名 |
| access_token | String | 是 | 用户授权令牌 |
应用级输入参数：
| 名称 | 类型 | 是否必须 | 描述 | 示例值 |
| ship_order_id | Integer | 是 | 发货单ID | 1980000 |
| skus | String | 否 | json类型字符串。可选打印sku。传入多个sku_code，用逗号分隔。不传此参数则返回整个发货单所有sku标签。 | ["1700076003","1700076004","1700076005"] |
接口返回结果：
| 字段 | 参考值 | 类型 | 描述 |
| status | 200 | Integer | 返回状态码 |
| msg | success | String | 接口返回信息 |
| content | 接口返回内容 |
数据返回示例：
//body返回的为base64 encode 后的PDF文件。接收返回的结果。
//body里面的内容用base64 decode解码获得返回的PDF文件流
{
"status": 200,
"msg": "success",
"content": {
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}
}