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是否可以使用IOBluetooth框架从蓝牙鼠标（在本例中为 Magic Mouse 2）读取电池电量？
这是否需要通过 L2CAP 或 RFCOMM 通道将请求写入数据？
我已经阅读了 SDP 服务记录，但不知道如何继续。