Method appendChild

src/main/java/org/htmlunit/html/DomNode.java:918–945

{@inheritDoc}

(final Node node)

     * {@inheritDoc}
     */
    @Override
    public DomNode appendChild(final Node node) {
        if (node == this) {
            throw new DOMException(DOMException.HIERARCHY_REQUEST_ERR, "Can not add not to itself " + this);
        }
        final DomNode domNode = (DomNode) node;
        if (domNode.isAncestorOf(this)) {
            throw new DOMException(DOMException.HIERARCHY_REQUEST_ERR, "Can not add (grand)parent to itself " + this);
        }

        if (domNode instanceof DomDocumentFragment fragment) {
            for (final DomNode child : fragment.getChildren()) {
                appendChild(child);
            }
        }
        else {
            // clean up the new node, in case it is being moved
            if (domNode.getParentNode() != null) {
                domNode.detach();
            }

            basicAppend(domNode);

            fireAddition(domNode);
        }

        return domNode;
    }

    /**
     * Appends the specified node to the end of this node's children, assuming the specified