code: def add_one(fut):
      return fut.wait() + 1
  
imports: import threading
  import time
  import torch
  import unittest
  from torch.futures import Future
  from torch.testing._internal.common_utils import IS_WINDOWS, TestCase, TemporaryFileName, run_tests
  from typing import TypeVar
label_desc: Use image node_id 1 for calling a global function with example usage: add_one(fut) and returns: unknown