INode added = node.addNode(((HopObject) child).node, index);
node.addNode(((HopObject) child).node, index);
    public boolean jsFunction_addAt(int index, Object child) {        if (child == null) {            return false;        }        if (child instanceof HopObject) {            INode added = node.addNode(((HopObject) child).node, index);            return true;        } else if (child instanceof INode) {            INode added = node.addNode((INode) child, index);            return true;        }        return false;    }