public function __construct($twig)
{
$this->twig = $twig;
// option only on forms
$this->twig->addTokenParser(new FormTokenParser());
$this->twig->addTokenParser(new FormEndTokenParser());
$this->twig->addTokenParser(new FormFieldTokenParser());
$this->twig->addTokenParser(new FormFieldErrorTokenParser());
$this->twig->addTokenParser(new SeoFormTokenParser());
}