private function addSalutation($salute)
    {
        if (is_array($salute)) {
            foreach ($salute as $tabik) {
                $this->salutations[] = htmlspecialchars($tabik, ENT_QUOTES);
            }
        } else {
            $this->salutations[] = htmlspecialchars($salute, ENT_QUOTES);
        }
    }