def login(
        self,
        jaguar_api_key: Optional[str] = "",
    ) -> bool:
        """
        Login to jaguar server with a jaguar_api_key or let self._jag find a key.

        Args:
            optional jaguar_api_key (str): API key of user to jaguardb server.
            If not provided, jaguar api key is read from environment variable
            JAGUAR_API_KEY or from file $HOME/.jagrc
        Returns:
            True if successful; False if not successful

        """
        if jaguar_api_key == "":
            jaguar_api_key = self._jag.getApiKey()
        self._jaguar_api_key = jaguar_api_key
        self._token = self._jag.login(jaguar_api_key)
        return self._token != ""

        Login to jaguar server with a jaguar_api_key or let self._jag find a key.

        Args:
            optional jaguar_api_key (str): API key of user to jaguardb server.
            If not provided, jaguar api key is read from environment variable
            JAGUAR_API_KEY or from file $HOME/.jagrc
        Returns:
            True if successful; False if not successful

        
llama-index-integrations/readers/llama-index-readers-jaguar/llama_index/readers/jaguar/base.py