code: def __init__(self, host: str, port: int, runtime_config: dict = {}):
      self.service_url = "http://{}:{}/admin/v2/".format(host, port)
      self.runtime_config = runtime_config
  
imports: import json
  import logging
  import requests
  from requests.adapters import HTTPAdapter
  from urllib3.util.retry import Retry
label_desc: Use image node_id 1 to create a new PulsarManager object  with example: obj = PulsarManager(host, port, runtime_config)