function createInvalidationNode(invalidation, showUnknownNodes)
    {
        var node = target.domModel.nodeForId(invalidation.frontendNodeId);
        if (node)
            return WebInspector.DOMPresentationUtils.linkifyNodeReference(node);
        if (invalidation.nodeName) {
            var nodeSpan = createElement("span");
            nodeSpan.textContent = WebInspector.UIString("[ %s ]", invalidation.nodeName);
            return nodeSpan;
        }
        if (showUnknownNodes) {
            var nodeSpan = createElement("span");
            return nodeSpan.createTextChild(WebInspector.UIString("[ unknown node ]"));
        }
    }
@param {!WebInspector.InvalidationTrackingEvent} invalidation
@param {boolean} showUnknownNodes