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