docs: def node(self, nodeid):
          """Creates a new node with the specified name, with `MockSocket` instances as incoming and outgoing sockets.
  
          Returns the implementation object created for the node from the cls, args and address specified, and the sockets.
          `cls` must be a callable that takes the insock and outsock, and the specified args and kwargs.
  
          """
          _assert_valid_nodeid(nodeid)
          # addr = 'tcp://' + nodeid
          # insock = MockInSocket(addEndpoints=lambda endpoints: self.bind(addr, insock, endpoints))
          # outsock = lambda: MockOutSocket(addr, self)
  
          return Node(hub=Hub(nodeid=nodeid))