code: def get_response_time(chatbot, statement="Hello"):
      """
      Returns the amount of time taken for a given
      chat bot to return a response.
  
      :param chatbot: A chat bot instance.
      :type chatbot: ChatBot
  
      :returns: The response time in seconds.
      :rtype: float
      """
      import time
  
      start_time = time.time()
  
      chatbot.get_response(statement)
  
      return time.time() - start_time
  
label_desc: Use image node_id 4 for calling a global function with example usage: get_response_time(chatbot, statement) and returns: unknown