code: def forward(self, img):
      assert (
          not self.ejected
      ), "recorder has been ejected, cannot be used anymore"
      self.clear()
      if not self.hook_registered:
          self._register_hook()
  
      pred = self.vit(img)
  
      # move all recordings to one device before stacking
      target_device = (
          self.device if self.device is not None else img.device
      )
      recordings = tuple(
          map(lambda t: t.to(target_device), self.recordings)
      )
  
      attns = (
          torch.stack(recordings, dim=1)
          if len(recordings) > 0
          else None
      )
      return pred, attns
  
file_path: vit-pytorch/vit_pytorch/recorder.py
imports: from functools import wraps
  import torch
  from torch import nn
  from vit_pytorch.vit import Attention
label_desc: Use image node_id 7 for calling the Recorder obj's underlying member method code with example usage: obj.forward(img) and returns: pred,  attns