code: def on_timeout(self):
      logger.error("Timeout.")
  
imports: import threading
  import json
  from six.moves import queue
  import tweepy
  from tweepy import streaming
  from pyalgotrade import observer
  import pyalgotrade.logger
label_desc: Use image node_id 3 for calling the Listener obj's underlying member method code with example usage: obj.on_timeout() without return types