code: def consume(self):
      assert not self.root
      return self.deserialize(self.sub.recv_multipart())
  
imports: import re
  import socket
  from functools import reduce
  import zmq
  from ipyparallel.serialize import deserialize_object, serialize_object
  from ipyparallel.util import disambiguate_url
label_desc: Use image node_id 8 for calling the BinaryTreeCommunicator obj's underlying member method code with example usage: obj.consume() and returns: self