ying data by calling the
 <code>setWrappedData()</code> method. It can be detached from that underlying data collection by passing a
 <code>null</code> parameter to this method.
 </p>

 <p>
 Concrete <a href="../../../jakarta/faces/model/DataModel.html" title="class in jakarta.faces.model"><code>DataModel</code></a> implementations must provide a public zero-arguments constructor that calls
 <code>setWrappedData(null)</code>. A convenience constructor that takes a wrapped object of the appropriate type (and