def notify_event_nowait(self, conn_string, name, event):
        """Notify an event.

        This will move the notification to the background event loop and
        return immediately.  It is useful for situations where you cannot
        await notify_event but keep in mind that it prevents back-pressure
        when you are notifying too fast so should be used sparingly.

        Note that calling this method will push the notification to a
        background task so it can be difficult to reason about when it will
        precisely occur.  For that reason, :meth:`notify_event` should be
        preferred when possible since that method guarantees that all
        callbacks will be called synchronously before it finishes.

        Args:
            conn_string (str): The connection string for the device that the
                event is associated with.
            name (str): The name of the event. Must be in SUPPORTED_EVENTS.
            event (object): The event object.  The type of this object will
                depend on what is being notified.
        """

        if self._loop.stopping:
            self._logger.debug("Ignoring notification %s from %s because loop is shutting down", name, conn_string)
            return

        self._loop.log_coroutine(self._notify_event_internal, conn_string, name, event)
Notify an event.

        This will move the notification to the background event loop and
        return immediately.  It is useful for situations where you cannot
        await notify_event but keep in mind that it prevents back-pressure
        when you are notifying too fast so should be used sparingly.

        Note that calling this method will push the notification to a
        background task so it can be difficult to reason about when it will
        precisely occur.  For that reason, :meth:`notify_event` should be
        preferred when possible since that method guarantees that all
        callbacks will be called synchronously before it finishes.

        Args:
            conn_string (str): The connection string for the device that the
                event is associated with.
            name (str): The name of the event. Must be in SUPPORTED_EVENTS.
            event (object): The event object.  The type of this object will
                depend on what is being notified.