'Return a combined identifier for the whole pack if this has more than one episode.'

@property
def pack_identifier(self):

    if (self.id_type == u'ep'):
        if (self.episodes > 1):
            return (u'S%02dE%02d-E%02d' % (self.season, self.episode, ((self.episode + self.episodes) - 1)))
        else:
            return self.identifier
    else:
        return self.identifier
