Tomcat undeploy task should be idempotent

Would it be possible to add a "No Fail" option to the undeploy task? This happens if you don't have an application at that context (for example, the first build or a manual undeploy), but that shouldn't really be fatal since there's probably a deploy after that. In my case I do a server restart after the undeploy to clear out the Tomcat class loaders so there's no residual leftover from the previous deployment. Otherwise you have to go in and disable the task and then do the build and then re-enable it.