code: def get_services(jaeger_port):
      response = http_requests.get(
          f"http://localhost:{jaeger_port}/api/services"
      )
      response.raise_for_status()
      response_json = response.json()
      services = response_json.get("data", []) or []
      return [
          service for service in services if service != "jaeger-query"
      ]
  
imports: from typing import Dict, Optional
  import requests
  from docarray import DocumentArray
  from opentelemetry.context.context import Context
  from prometheus_api_client import PrometheusConnect
  from jina import Executor, requests
label_desc: Use image node_id 5 for calling a global function with example usage: get_services(jaeger_port) and returns: unknown