How to use the cysystemd.journal.Priority.CRITICAL function in cysystemd

def write(message, priority=Priority.INFO):
    """ Write message into systemd journal 
    :type priority: Priority
    :type message: str
    """

    priority = int(Priority(int(priority)))

    send(priority=priority, message=message)


class JournaldLogHandler(logging.Handler):
    LEVELS = {
        logging.CRITICAL: Priority.CRITICAL.value,
        logging.FATAL: Priority.PANIC.value,
        logging.ERROR: Priority.ERROR.value,
        logging.WARNING: Priority.WARNING.value,
        logging.WARN: Priority.WARNING.value,
        logging.INFO: Priority.INFO.value,
        logging.DEBUG: Priority.DEBUG.value,
        logging.NOTSET: Priority.NONE.value,
    }

    __slots__ = ("__facility",)

    def __init__(self, identifier=None, facility=Facility.DAEMON):
        """

        :type identifier: Override default journald identifier
        :type facility: Facility