class_docstr: MesageSender is a wrapper around the facebook messenger requests that simplifies the
  process of sending content.
class_docstr_tok: ["MesageSender","is","a","wrapper","around","the","facebook","messenger","requests","that","simplifies","the","process","of","sending","content","."]
docstr: Deletes the persona.
docstr_tok: ["Deletes","the","persona","."]
code: def delete_persona(self, persona_id):
      """
      Deletes the persona.
      """
      api_address = "https://graph.facebook.com/" + persona_id
      response = requests.delete(api_address, params=self.auth_args)
      result = response.json()
      log_utils.print_and_log(
          logging.INFO,
          '"Facebook response from delete persona: {}"'.format(result),
      )
      return result
  
file_path: ParlAI/parlai/chat_service/services/messenger/message_sender.py
imports: import json
  import logging
  import requests
  import parlai.chat_service.utils.logging
label_desc: Use image node_id 8 for calling the MessageSender obj's underlying member method code with example usage: obj.delete_persona(persona_id) and returns: result