code: def __call__(self, request):
      input_data = request
      return self.ratio * self.weight * input_data
  
imports: import array
  import asyncio
  import os
  import sys
  from typing import Dict, Union
  import pytest
  import requests
  import starlette.requests
  from ray import serve
  from ray.serve._private.deployment_graph_build import build
  from ray.serve.handle import DeploymentHandle
label_desc: Use image node_id 3 for calling the Model obj's underlying member method code with example usage: obj.__call__(request) and returns: unknown