code: def test_deploy_application_with_route_prefix_conflict(
      serve_instance,
  ):
      """Test route_prefix conflicts with different apps."""
  
      @serve.deployment
      class Model:
          def __call__(self):
              return "got model"
  
      handle = serve.run(Model.bind(), name="app").options(
          use_new_handle_api=True,
      )
      assert handle.remote().result() == "got model"
      assert requests.get("http://127.0.0.1:8000/").text == "got model"
  
      # Second app with the same route_prefix fails to be deployed
      @serve.deployment
      class Model1:
          def __call__(self):
              return "got model1"
  
      with pytest.raises(RayServeException):
          serve.run(Model1.bind(), name="app1")
  
      # Update the route prefix
      handle = serve.run(
          Model1.bind(), name="app1", route_prefix="/model1"
      ).options(
          use_new_handle_api=True,
      )
      assert handle.remote().result() == "got model1"
      assert (
          requests.get("http://127.0.0.1:8000/model1").text
          == "got model1"
      )
  
      # The "app" application should still work properly
      assert requests.get("http://127.0.0.1:8000/").text == "got model"
  
imports: import asyncio
  import os
  import sys
  from typing import Dict, Optional
  import pytest
  import requests
  import starlette.responses
  from fastapi import FastAPI
  import ray
  from ray import serve
  from ray._private.pydantic_compat import BaseModel, ValidationError
  from ray._private.test_utils import SignalActor, wait_for_condition
  from ray.serve._private.api import call_app_builder_with_args_if_necessary
  from ray.serve._private.common import DeploymentID
  from ray.serve._private.constants import SERVE_DEFAULT_APP_NAME
  from ray.serve.deployment import Application
  from ray.serve.exceptions import RayServeException
  from ray.serve.handle import DeploymentHandle, RayServeHandle
label_desc: Use image node_id 23 for calling a global function with example usage: test_deploy_application_with_route_prefix_conflict(serve_instance) and returns: str, str