def METHOD_NAME(self, ep_obj, lang):
    """
    Send a notification to a Slack channel when subtitles for an episode are downloaded.
    :param ep_name: The name of the episode subtitles were downloaded for
    :param lang: The language of the downloaded subtitles
    """
    if app.SLACK_NOTIFY_SUBTITLEDOWNLOAD:
        message = common.notifyStrings[common.NOTIFY_SUBTITLE_DOWNLOAD]
        self._notify_slack('{message} {ep_name}: {lang}'.format(message=message, ep_name=ep_obj.pretty_name(),
                                                                lang=lang))