class_docstr: A class that keeps all conversation history.
class_docstr_tok: ["A","class","that","keeps","all","conversation","history","."]
code: def append_message(self, role, message):
      self.messages.append([role, message])
  
file_path: llmga/llmga/llava/conversation.py
imports: import dataclasses
  from enum import auto, Enum
  from typing import List, Tuple
label_desc: Use image node_id 2 for calling the Conversation obj's underlying member method code with example usage: obj.append_message(role, message) without return types