code: def copy(self, device: torch.device) -> nn.Module:
      ...
  
file_path: torchrec/torchrec/types.py
imports: from abc import abstractmethod
  from enum import Enum, unique
  import torch
  from torch import nn
label_desc: Use image node_id 1 for calling the CopyMixIn obj's underlying member method code with example usage: obj.copy(device) without return types