ementRef(name="quantity", type=JAXBElement.class),
                &#64;XmlElementRef(name="name", type=JAXBElement.class)})
        List getContent(){...}
 }
 </pre>
 The following is an XML instance document with mixed content
 <pre><code>
 &lt;letterBody&gt;
 Dear Mr.&lt;name&gt;Robert Smith&lt;/name&gt;
 Your order of &lt;quantity&gt;1&lt;/quantity&gt; &lt;productName&gt;Baby
 Monitor&lt;/productName&gt; shipped from our warehouse. ....
 &lt;/letterBody&gt;
 </code></pre>
 that can be constructed using 