code: def tensors_saved_for_backwards_slice(self):
      assert self.num_symints_saved_for_bw is not None
      if self.num_symints_saved_for_bw > 0:
          return slice(self.num_forward, -self.num_symints_saved_for_bw)
      else:
          return slice(self.num_forward, None)
  
imports: import collections
  from dataclasses import dataclass
  from enum import Enum
  from typing import Any, Callable, Dict, List, NewType, Optional, Set, Tuple, Union
  import torch
  import torch.utils._pytree
  from torch._guards import Source
  from torch._subclasses import FakeTensor
  from torch._subclasses.fake_tensor import is_fake
  from ..None import config
  from .utils import strict_zip
label_desc: Use image node_id 2 for calling the ViewAndMutationMeta obj's underlying member method code with example usage: obj.tensors_saved_for_backwards_slice() and returns: slice, slice