code: def compute_batch_loss(self, batch):
      raise NotImplementedError
  
imports: from typing import Callable, NamedTuple, Optional
  import torch
  import torch.nn
  from torch import Tensor
  import neuralcompression.functional
label_desc: Use image node_id 3 for calling the DvcStage obj's underlying member method code with example usage: obj.compute_batch_loss(batch) without return types