class_docstr: The common interface between the :class:`Checkpoint` and
  :class:`Recompute` context.
class_docstr_tok: ["The","common","interface","between","the",":","class",":","`","Checkpoint","`","and",":","class",":","`","Recompute","`","context","."]
code: def save_for_backward(
      self, *tensors: Tensor
  ) -> None:  # pragma: no cover
      pass
  
imports: from collections import deque
  from contextlib import contextmanager
  import threading
  from typing import TYPE_CHECKING, Deque, Generator, List, Optional, Tuple, Union
  import torch
  from torch import ByteTensor, Tensor
  import torch.autograd
  from .dependency import fork, join
  from .microbatch import Batch
  from .phony import get_phony
label_desc: Use image node_id 1 for calling the Context obj's underlying member method code with example usage: obj.save_for_backward() without return types