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

        return $this->addUsingAlias(PersonFunctionI18nTableMap::LABEL, $label, $comparison);
    }