Pop\Dom\AbstractDom::addChild PHP Метод

    public function addChild($c)
    {
        if ($c instanceof Child) {
            $this->childNodes[] = $c;
        } else {
            if (is_array($c)) {
                $this->childNodes[] = Child::factory($c);
            } else {
                throw new Exception('The argument passed is not valid.');
            }
        }
        return $this;
    }