code: def __hash__(self):
      return hash((self.a, self.b, self.c))
  
file_path: gluonts/test/core/test_component.py
imports: import random
  from typing import Dict, List
  from gluonts.core.component import validated
  from gluonts.core.serde import dump_json, load_json
label_desc: Use image node_id 3 for calling the Foo obj's underlying member method code with example usage: obj.__hash__() and returns: hash