code: def test_apply_optimizer_in_backward(self) -> None:
      self._test_apply_optimizer_in_backward(share_params=False)
  
file_path: pytorch/test/distributed/optim/test_apply_optimizer_in_backward.py
imports: import unittest
  from copy import deepcopy
  import torch
  import torch.nn
  from torch.distributed.optim import _apply_optimizer_in_backward, _get_in_backward_optimizers
label_desc: Use image node_id 3 for calling the ApplyOverlappedOptimizerTest obj's underlying member method code with example usage: obj.test_apply_optimizer_in_backward() without return types