Blackberry BrowserField2Demo redirect

Question

I'm working with the JDE 7.1 in BrowserField2Demo and want to know how to intercept the "pre-load" event. The "OLD" BrowserFieldDemo had events such as "Event.EVENT_URL_REQUESTED" that would allow URL pre-load manipulations. Where do these events happen with "BrowserField2"?

Example: If the URL requested was "http://www.bing.com/" and I wished to re-direct it to "http://www.google.com/" where does this "pre-load" event happen?

Here is my code after a failed attempt which doesn't work:

---

private BrowserField _browserField;    
private boolean _documentLoaded = false;
private BrowserFieldRequest _request;


/**
 * Creates a new BrowserFieldScreen object
 * @param request The URI of the content to display in this BrowserFieldScreen
 * @param enableScriptMenu True if a context menu is to be created for this BrowserFieldScreen instance, false otherwise
 */
public BrowserFieldScreen(BrowserFieldRequest request, boolean enableScriptMenu)
{    
    super(Screen.HORIZONTAL_SCROLL);

    BrowserFieldConfig config = new BrowserFieldConfig();  
    config.setProperty(BrowserFieldConfig.ALLOW_CS_XHR, Boolean.TRUE);
    config.setProperty(BrowserFieldConfig.JAVASCRIPT_ENABLED, Boolean.TRUE);
    config.setProperty(BrowserFieldConfig.NAVIGATION_MODE,BrowserFieldConfig.NAVIGATION_MODE_POINTER);
    config.setProperty(BrowserFieldConfig.CONTROLLER, controller);
    _browserField = new BrowserField(config);
    add(_browserField);
    _request = request;        
}    


ProtocolController controller = new ProtocolController(_browserField)    
{    
    public void handleNavigationRequest(BrowserFieldRequest request) throws Exception    
    {    
        InputConnection inputConnection = handleResourceRequest(request);    
        _browserField.displayContent(inputConnection, request.getURL());    
    }    
};

---

What I see is that at the first time the handleNavigationRequest gets called is that it crashes with the error message saying

Error request content for google.com error message null

with a CLOSE button. Then nothing happens.