code: def val_dict(self) -> Dict[str, torch.Tensor]:
      raise NotImplementedError()
  
file_path: cugraph/benchmarks/cugraph/standalone/bulk_sampling/datasets/dataset.py
imports: import torch
  from typing import Dict, Tuple
label_desc: Use image node_id 6 for calling the Dataset obj's underlying member method code with example usage: obj.val_dict() without return types