Closes an exclusive access to the device.
- macOS 10.2+
- Mac Catalyst 13.0+
Pointer to IOFireWireAVCLibUnitInterface.
Closes an exclusive access to the device. When a device is closed it may be unloaded by the kernel. If it is unloaded and then later reappears it will be represented by a different object. You won't be able to use this user client on the new object. The new object will have to be looked up in the I/O Registry and a new user client will have to be opened on it.