de> method to detect whether row data
 will be available for use by the <code>getRowData()</code> method.</p>

 <p>If there is no <code>wrappedData</code> available when this method
 is called, the specified <code>rowIndex</code> is stored (and may be
 retrieved by a subsequent call to <code>getRowData()</code>), but no
 event is sent.  Otherwise, if the currently selected row index is
 changed by this call, a <a href="../../../javax/faces/model/DataModelEvent.html" title="class in javax.faces.model"><code>