Gets all the BOS descriptors exported by the device.
The first time this method is used the hardware is queried and then after that cached results
are returned. To invalidate the caches use g_usb_device_invalidate().
Available since:
0.4.0
Return value
Returns:
An array of GUsbBosDescriptor*
An array of BOS descriptors.
The caller of the method takes ownership of the data container, but not the data inside it.