public function filterByGroupSlug($groupSlug = null, $comparison = null)
    {
        if (null === $comparison) {
            if (is_array($groupSlug)) {
                $comparison = Criteria::IN;
            } elseif (preg_match('/[\%\*]/', $groupSlug)) {
                $groupSlug = str_replace('*', '%', $groupSlug);
                $comparison = Criteria::LIKE;
            }
        }

        return $this->addUsingAlias(SportTableMap::COL_GROUP_SLUG, $groupSlug, $comparison);
    }