> 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="../../../jakarta/faces/model/DataModelEvent.html" title="class in jakarta.faces.model"><co