code: def __init__(
      self,
      m1: DeploymentHandle,
      m2: Union[DeploymentHandle, Dict[str, DeploymentHandle]],
  ):
      self.m1 = m1
      if isinstance(m2, dict):
          self.m2 = m2.get(NESTED_HANDLE_KEY)
      else:
          self.m2 = m2
  
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 1 to create a new Combine object  with example: obj = Combine(m1, m2)