class_docstr: World Runner.
  
  Launches worlds, overworlds, etc. Helper for ChatServiceManager.
code: def _log(self, text):
      if self.debug:
          time = datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")
          print("{} DEBUG: {}".format(time, text))
  
file_path: ParlAI/parlai/chat_service/core/world_runner.py
imports: import logging
  import time
  import datetime
  from concurrent import futures
  import parlai.chat_service.utils.logging
  import parlai.chat_service.utils.misc
label_desc: Use image node_id 2 for calling the ChatServiceWorldRunner obj's underlying member method code with example usage: obj._log(text) without return types