Simple Answer
Use a ServiceLink to the RestartService in your page(.html).
<span jwc>Logout</span>
This will save on writing extra classes if you don't need them, but stops you from doing other things in your listener without wrapping the Restart Service (like logging a message, giving the user the option to not logout?, etc).
Listener Approach (for versions up to beta-12)
Firstly, you will need to define a listener method in your page (or component) class, and a LinkFactory getter.
public abstract IEngineService getRestartService();
public ILink logout(IRequestCycle cycle)
{
// do your own cleanup here
return getRestartService.getLink(cycle, false, null);
}
Then, in your .page (or .jwc), inject the LinkFactory :
<inject object="engine-service:restart" property="restartService" />
Thirdly add the listener to your link:
<span jwc>Logout</span>
Listener Approach (for versions later than beta-12)
Due to changes to the getLink parameters that occured in beta-13, your logout method should now be:
public ILink logout()
{
// do your own cleanup here
return getRestartService.getLink(false, null);
}
Note that since we don't need the IRequestCycle in order to generate the ILink, we don't need to include it in our listener either.