class_docstr: Container for keeping the content of one interaction between agents.
class_docstr_tok: ["Container","for","keeping","the","content","of","one","interaction","between","agents","."]
code: def __init__(self, message_dict: dict) -> None:
      self._message = message_dict
      self._sender = get_human_sender(self._message)
  
imports: from typing import Dict, Union
  import parlai.utils.logging
  from parlai.crowdsourcing.projects.wizard_of_internet.wizard_internet_blueprint import WIZARD_INTERNET_PARLAICHAT_BLUEPRINT
  from parlai.crowdsourcing.utils.analysis import AbstractResultsCompiler
  from mephisto.abstractions.blueprint import AgentState
label_desc: Use image node_id 1 to create a new ChatMessage object  with example: obj = ChatMessage(message_dict)