class_docstr: Uses handler's database to store and retrieve messages
class_docstr_tok: ["Uses","handler","'s","database","to","store","and","retrieve","messages"]
code: def _add_to_history(self, chat_id, chat_message):
      # do nothing. sent message will be stored by handler db
      pass
  
imports: from mindsdb_sql.parser.ast import Identifier, Select, BinaryOperation, Constant, OrderBy
  from mindsdb.interfaces.storage import db
  from .types import ChatBotMessage
label_desc: Use image node_id 1 for calling the HandlerMemory obj's underlying member method code with example usage: obj._add_to_history(chat_id, chat_message) without return types