title: Using StaxEventItemReader with jaxb2 unmarshaller
body: <p>I have xml that looks like this</p>
  
  <pre><code>&lt;Items&gt;
    &lt;Item&gt;
    &lt;Item&gt;
  &lt;/Items&gt;
  </code></pre>
  
  <p>And i have xsd for this structure and have generated coresponding class using xjc (so <code>Items</code> is rootElement)</p>
  
  <p>problem is that <code>StaxEventItemReader</code> needs a way to unmarshall just <code>&lt;Item&gt;&lt;/Item&gt;</code> and take it as root element, so jaxb2 unmarshallers throws error that it expects Items but got Item.</p>