ConcurrentRenderHelper crHelper = ConcurrentRenderHelper.getInstance(context, doc);
String delcaration = null;
if (crHelper.hasUnCompletedTask()) {
delcaration = null;
try {
FutureRendererHolder holder = crHelper.take();
delcaration = holder.getRenderDeclaration();
String ref = holder.getSnippetRefId();
String reSelector = SelectorUtil.attr(ExtNodeConstants.SNIPPET_NODE_TAG_SELECTOR, ExtNodeConstants.ATTR_SNIPPET_REF,
ref);
Element element = doc.select(reSelector).get(0);// must have