class_docstr: Base class for a person on messenger that can act in a ParlAI world.
class_docstr_tok: ["Base","class","for","a","person","on","messenger","that","can","act","in","a","ParlAI","world","."]
docstr: Allow agent to observe typing indicator.
docstr_tok: ["Allow","agent","to","observe","typing","indicator","."]
code: def observe_typing_on(self, persona_id=None):
      """
      Allow agent to observe typing indicator.
      """
      self.manager.message_sender.typing_on(
          self.id, persona_id=persona_id
      )
  
file_path: ParlAI/parlai/chat_service/services/messenger/agents.py
imports: import time
  from parlai.chat_service.core.agents import ChatServiceAgent
label_desc: Use image node_id 3 for calling the MessengerAgent obj's underlying member method code with example usage: obj.observe_typing_on(persona_id) without return types