# The ContainerNode trait # ## Introduction ## Allows the extended PHP DOM classes to simulate inheriting from a theoretical extended [\DOMNode](https://www.php.net/manual/en/class.domnode.php). This one implements improved DOM child insertion methods.

trait MensBeam\HTML\ContainerNode {

    use Node;

    public appendChild ( \DOMNode $node ) : \DOMNode|false
    public insertBefore ( \DOMNode $node , \DOMNode|null $child = null ) : \DOMNode|false

}