docstr: Returns value if rank == dst, otherwise returns None.
docstr_tok: ["Returns","value","if","rank","==","dst",",","otherwise","returns","None","."]
code: def option(self, value, dst):
      """
      Returns value if rank == dst, otherwise returns None.
      """
      return value if self.rank == dst else None
  
imports: import typing
  import warnings
  from typing import overload
  import torch
  from fate.arch.protocol import mpc
  import logging
label_desc: Use image node_id 26 for calling the MPC obj's underlying member method code with example usage: obj.option(value, dst) and returns: unknown