public function __construct(string $scheme, string $parameter)
{
$scheme = new Str($scheme);
if (!$scheme->match('~^\\w+$~')) {
throw new InvalidArgumentException();
}
$this->scheme = (string) $scheme;
$this->parameter = $parameter;
parent::__construct((string) $scheme->prepend('"')->append('" ')->append($parameter)->trim());
}
