Node node = parseXml("<p><ak><a accesskey=\"x\">x abc</a></ak></p>");
StringWriter out = new StringWriter();
context.setContentHandler(new TestDebugProducer(out));
outputter.addSpecialElementProcessor("ak",
new WBSAXAccesskeyAnnotationElementProcessor(context, true));
node.accept(outputter);
// Check for <p><a accesskey="{opaque}">{opaque}abc</a></p>
// The access key opaque values created by above cannot be rendered
// until they have a value. For now we just check for the exception in
// it's place as we are not testing the opaque value's behaviour.