code: def cmd_link_add(self, args):
          '''add new link'''
          device = args[0]
          print("Adding link %s" % device)
          self.link_add(devicef cmd_link_add(self, args):
          '''add new link'''
          device = args[0]
          print("Adding link %s" % device)
          self.link_add(device)
docs: add new link