protected static function formHead(
        ParticleInterface $particle,
        array $pack,
        string $name, 
        array $args): \Pho\Lib\Graph\NodeInterface
    {
        $class = static::findFormativeClass($name, $args, $pack);
        if(count($args)>0) {
            return new $class($particle, $particle->where(), ...$args);
        }
        return new $class($particle, $particle->where());
    }