code: def backward(ctx, gO):
      return gO
  
imports: from dataclasses import dataclass
  from typing import Optional
  import torch
  from torch.autograd import Function
  from torch.utils import _pytree
label_desc: Use image node_id 2 for calling the QBitsToQTensor obj's underlying member method code with example usage: obj.backward(ctx, gO) and returns: gO