code: def num_edges(self, edge_type: Tuple[str, str, str]) -> int:
      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 10 for calling the Dataset obj's underlying member method code with example usage: obj.num_edges(edge_type) without return types