code: def multiply(self, input_factor: int) -> int:
      return input_factor * self.factor
  
file_path: ray/python/ray/serve/tests/test_config_files/pizza.py
imports: from enum import Enum
  from typing import Dict, List
  import starlette.requests
  from ray import serve
  from ray.serve.handle import DeploymentHandle
label_desc: Use image node_id 3 for calling the Multiplier obj's underlying member method code with example usage: obj.multiply(input_factor) and returns: unknown