code: def before_forward(
      self, inp: Any, index: Optional[int] = None
  ) -> Any:
      return inp
  
imports: from torch import nn
  from torch import Tensor
  from typing import Any
  from typing import List
  from typing import Tuple
  from typing import Optional
  from torch.nn import Module
label_desc: Use image node_id 1 for calling the IHook obj's underlying member method code with example usage: obj.before_forward(inp, index) and returns: inp