code: def _create_worker(port, port_monitoring=None):
      # create a single worker runtime
      p = multiprocessing.Process(
          target=_create_worker_runtime,
          args=(port,),
          kwargs={"port_monitoring": port_monitoring},
          daemon=True,
      )
      p.start()
      time.sleep(0.1)
      return p
  
file_path: jina/tests/integration/monitoring/test_manual_flow.py
imports: import multiprocessing
  import time
  import pytest
  import requests
  from docarray import Document, DocumentArray
  from jina import Executor, Flow, requests
  from jina.parsers import set_gateway_parser
  from jina.serve.runtimes.asyncio import AsyncNewLoopRuntime
  from jina.serve.runtimes.worker.request_handling import WorkerRequestHandler
  from jina.serve.runtimes.gateway.request_handling import GatewayRequestHandler
  from jina.serve.runtimes.servers import BaseServer
  from tests.helper import _generate_pod_args
label_desc: Use image node_id 3 for calling a global function with example usage: _create_worker(port, port_monitoring) and returns: p