Nucleus/Device.md

-A device represents a networking device orchestrated by `gosdn`
+A `Device` represents an `Orchestrated Networking Device (OND)`. An `OND` itself is a network device that is managed by the goSDN `nucleus`. 
+
+The `Device` holds a reference of its associated [Southbound Interface](https://code.fbi.h-da.de/cocsn/gosdn/-/wikis/Nucleus/Southbound-Interface) and [Transport](https://code.fbi.h-da.de/cocsn/gosdn/-/wikis/Nucleus/Transport) implementation. It contains a ygot fakeroot device based on the particular [Southbound Interface](https://code.fbi.h-da.de/cocsn/gosdn/-/wikis/Nucleus/Southbound-Interface) used and implements the [Storable Interface](https://code.fbi.h-da.de/cocsn/gosdn/-/wikis/Nucleus/Storable).
 
 ```plantuml
-    class Device  {
-        - device ygot.Device
-        - Sbi interfaces.SouthboundInterface
-        - Config interfaces.DeviceConfig
+    class Device << (S,Aquamarine) >> {
+        + UUID uuid.UUID
+        + SBI SouthboundInterface
+        + Transport Transport
+
+        + ID() uuid.UUID
+
     }
+"ygot.GoStruct" *-- "Device"
 ```
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