code: def device(self) -> torch.device | None:
      return self._device
  
imports: from __future__ import annotations
  from ..torch_basics import *
  from torch.utils.data.dataloader import _MultiProcessingDataLoaderIter, _SingleProcessDataLoaderIter, _DatasetKind
label_desc: Use image node_id 8 for calling the DataLoader obj's underlying member method code with example usage: obj.device() and returns: self