code: def get_device(self):
          
          addr = self.address
          servers = [server for server in pyrax.cloudservers.list()
                  if addr in server.networks.get("private", "")]
          try:
              return servers[0]
          except IndexError:
              return None
docs: Returns a reference to the device that is represented by this node.
          Returns None if no such device can be determined.