code: def cpu(self):
      return EnsembleOutput(self.outputs.cpu())
  
imports: from dataclasses import dataclass
  from typing import List, Optional, Union
  import torch
  import torch.nn.functional
  from classy_vision.generic.util import is_on_gpu
  from classy_vision.losses import ClassyLoss, register_loss
  from torch import nn, Tensor
  from vissl.config import AttrDict
label_desc: Use image node_id 1 for calling the EnsembleOutput obj's underlying member method code with example usage: obj.cpu() and returns: EnsembleOutput