Gets all the known network devices.
Use nm_device_get_type or the NM_IS_DEVICE_XXXX functions to determine what kind of device member of the returned
array is, and then you may use device-specific methods such as
get_hw_address.
| this |
a Client |
|
a GenericArray containing all the Devices. The returned array is owned by the Client object and should not be modified. |