Perform lookup for name of episode numbers for a given series.

        :param object series: instance of a series
        :param list episode_numbers: the episode sequence number
        :param int season_number: numeric season of series
        :returns: list of episode name
        :rtype: list(str)

def get_episode_name(self, series, episode_numbers, season_number):
        """Perform lookup for name of episode numbers for a given series.

        :param object series: instance of a series
        :param list episode_numbers: the episode sequence number
        :param int season_number: numeric season of series
        :returns: list of episode name
        :rtype: list(str)
        """
        try:
            episodes = self.api.get_episodes(series.get('id'),
                                             airedSeason=season_number)
        except exceptions.TVDBRequestException as err:
            LOG.exception('episodes for series %s season no %s failed',
                          series.get('id'), season_number)
            return None, _as_str(err)

        epnames = []
        for epno in episode_numbers:
            epname = _get_epname(episodes, epno)
            if epname is None:
                epname = _get_epname(episodes, epno, absolute=True)
                if epname is None:
                    return None, None

            epnames.append(epname)

        return epnames, None