identifierForVendor 或类似的 watchOS (2.0+)
问题描述：
watchOS (2.X) 上是否有 identifierForVendor 的替代品?我一直在阅读文档，但似乎没有任何类似的方法来识别设备.
Is there any replacement for identifierForVendoron watchOS (2.X)? I have been reading the documentation but it doesn't look like there's any similar method for identifying the device.
谢谢！