def METHOD_NAME(self, bot_handler: BotHandler) -> None:
    test_query_response = requests.get(
        f"https://api.trello.com/1/members/{self.user_name}/", params=self.auth_params
    )
    if test_query_response.text == "invalid key":
        bot_handler.quit("Invalid Credentials. Please see doc.md to find out how to get them.")