How to use the sickrage.helper.common.dateTimeFormat function in sickrage

:param force:
        :type force: bool
        """
        if not self.is_location_valid():
            logger.log(u"Episode file doesn't exist, can't download subtitles for {} {}".format
                       (self.show.name, episode_num(self.season, self.episode) or
                        episode_num(self.season, self.episode, numbering='absolute')), logger.DEBUG)
            return

        new_subtitles = subtitles.download_subtitles(self)
        if new_subtitles:
            self.subtitles = subtitles.merge_subtitles(self.subtitles, new_subtitles)

        self.subtitles_searchcount += 1 if self.subtitles_searchcount else 1
        self.subtitles_lastsearch = datetime.datetime.now().strftime(dateTimeFormat)
        self.save_to_db()

        if new_subtitles:
            subtitle_list = ', '.join([subtitles.name_from_code(code) for code in new_subtitles])
            logger.log(u'Downloaded {} subtitles for {} {}'.format
                       (subtitle_list, self.show.name, episode_num(self.season, self.episode) or
                        episode_num(self.season, self.episode, numbering='absolute')))

            notifiers.notify_subtitle_download(self.pretty_name(), subtitle_list)

        return new_subtitles