code: def __hash__(self):
      return hash(self.get_filename())
  
file_path: faiss/benchs/bench_fw/descriptors.py
imports: from dataclasses import dataclass
  import logging
  from typing import Any, Dict, List, Optional
  import faiss
  from .utils import timer
label_desc: Use image node_id 1 for calling the DatasetDescriptor obj's underlying member method code with example usage: obj.__hash__() and returns: hash