Close Current Window using html page

Hi

We have migrated a WDJ dc from 7.0 to 7.3, before migration there was a code to close window using html file as given below. This code is not working on 7.3 now as this might be removed from API & no javadocs are available for the same.

Please provide some suitable way to redirect to URL(created for close.html), as I want to close window using the same html file. Also I'm not able to create fireplugs, so exitplug method wont work.

String Url = WDURLGenerator.getWebResourceUrl(wdComponentAPI.getComponent().getDeployableObjectPart(),"close.html");

TaskBinder.getCurrentTask().getClient().sendRedirect(Url, 0);

Thanks

Akanksha