type.setSchemaType(new QName("urn:Bean", "bean"));
Context messageContext = new Context(context);
Element element = new Element("root", "b", "urn:Bean");
new Document(element);
XmlMappedAttributeBean bean = new XmlMappedAttributeBean();
type.writeObject(bean, new JDOMWriter(element), messageContext);
assertValid("/b:root[@pkg:attrXmlString]", element);
assertXPathEquals("/b:root/@pkg:attrXmlString", "attrXml", element);
}