PhpSigep\Pdf\CartaoDePostagem2016::_ PHP Метод

    private function _($str)
    {
        $replaces = array('ā' => 'a');
        $str = str_replace(array_keys($replaces), array_values($replaces), $str);
        if (extension_loaded('iconv')) {
            return iconv('UTF-8', 'ISO-8859-1', $str);
        } else {
            return utf8_decode($str);
        }
    }