def __init__(self, logger, pack_name, class_name):
        """
        :param auth_token: Auth token used to authenticate with StackStorm API.
        :type auth_token: ``str``
        """
        self._pack_name = pack_name
        self._class_name = class_name
        self._logger = logger

        self._client = None
        self._token_expire = get_datetime_utc_now()

        :param auth_token: Auth token used to authenticate with StackStorm API.
        :type auth_token: ``str``
        
st2common/st2common/services/datastore.py