code: def forward(self, input: int):
      return self.ratio * self.weight * input
  
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 2 for calling the Model obj's underlying member method code with example usage: obj.forward(input) and returns: unknown