QueryPath\DOMQuery::add PHP Method

    public function add($selector)
    {
        // This is destructive, so we need to set $last:
        $this->last = $this->matches;
        foreach (QueryPath::with($this->document, $selector, $this->options)->get() as $item) {
            $this->matches->attach($item);
        }
        return $this;
    }