code: def backward(ctx: Any, grad_output: Any) -> Any:
      return grad_output, None
  
imports: from typing import Any
  import torch
  from .target_space import PruningTargetSpace, QuantizationTargetSpace, TargetSpace, TargetType
label_desc: Use image node_id 2 for calling the ClampRound obj's underlying member method code with example usage: obj.backward(ctx, grad_output) and returns: grad_output,  None